TY  - JOUR
AU  - Cekić, Božidar Đ.
AU  - Ivanovski, Valentin N.
AU  - Zak, T.
AU  - Stojić, Dragica Lj.
AU  - Belošević-Čavor, Jelena
AU  - Koteski, Vasil J.
AU  - Umićević, Ana
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4410
AB  - Mossbauer spectrum measured on ferromagnetic HfFe2 at 296 K, consists of four six-line components and one doublet. The Laves phase HfFe2 has three kinds of crystal structures: cubic MgCu2(C15), hexagonal MgZn2(C14) and MgNi2(C36). We assigned two sextets to the 2a and 6h sites of C14, one to the C15 and the fourth sextet to the minor presence of alpha-Fe. The doublet originates from small amount of FeO, apparently a corrosion product. The pseudobinary compound of Hf0.75Ta0.25Fe2 (C14) undergoes the first - order transition to antiferromagnetic (AFM) state at about 180 K due to the strong spin fluctuation. Therefore, a magnetic sextet and a doublet were observed for the spectra assigned to the 6h and 2a site. The second sextet is attached to the minor presence of Fe3O4.
T2  - Romanian Journal of Physics
T1  - Mössbauer Study of HfFe2 and Hf0.75Ta0.25Fe2
VL  - 56
IS  - 5-6
SP  - 719
EP  - 723
UR  - https://hdl.handle.net/21.15107/rcub_vinar_4410
ER  - 

@article{
author = "Cekić, Božidar Đ. and Ivanovski, Valentin N. and Zak, T. and Stojić, Dragica Lj. and Belošević-Čavor, Jelena and Koteski, Vasil J. and Umićević, Ana",
year = "2011",
abstract = "Mossbauer spectrum measured on ferromagnetic HfFe2 at 296 K, consists of four six-line components and one doublet. The Laves phase HfFe2 has three kinds of crystal structures: cubic MgCu2(C15), hexagonal MgZn2(C14) and MgNi2(C36). We assigned two sextets to the 2a and 6h sites of C14, one to the C15 and the fourth sextet to the minor presence of alpha-Fe. The doublet originates from small amount of FeO, apparently a corrosion product. The pseudobinary compound of Hf0.75Ta0.25Fe2 (C14) undergoes the first - order transition to antiferromagnetic (AFM) state at about 180 K due to the strong spin fluctuation. Therefore, a magnetic sextet and a doublet were observed for the spectra assigned to the 6h and 2a site. The second sextet is attached to the minor presence of Fe3O4.",
journal = "Romanian Journal of Physics",
title = "Mössbauer Study of HfFe2 and Hf0.75Ta0.25Fe2",
volume = "56",
number = "5-6",
pages = "719-723",
url = "https://hdl.handle.net/21.15107/rcub_vinar_4410"
}

Cekić, B. Đ., Ivanovski, V. N., Zak, T., Stojić, D. Lj., Belošević-Čavor, J., Koteski, V. J.,& Umićević, A.. (2011). Mössbauer Study of HfFe2 and Hf0.75Ta0.25Fe2. in Romanian Journal of Physics, 56(5-6), 719-723.
https://hdl.handle.net/21.15107/rcub_vinar_4410

Cekić BĐ, Ivanovski VN, Zak T, Stojić DL, Belošević-Čavor J, Koteski VJ, Umićević A. Mössbauer Study of HfFe2 and Hf0.75Ta0.25Fe2. in Romanian Journal of Physics. 2011;56(5-6):719-723.
https://hdl.handle.net/21.15107/rcub_vinar_4410 .

Cekić, Božidar Đ., Ivanovski, Valentin N., Zak, T., Stojić, Dragica Lj., Belošević-Čavor, Jelena, Koteski, Vasil J., Umićević, Ana, "Mössbauer Study of HfFe2 and Hf0.75Ta0.25Fe2" in Romanian Journal of Physics, 56, no. 5-6 (2011):719-723,
https://hdl.handle.net/21.15107/rcub_vinar_4410 .

TY  - CONF
AU  - Cekić, Božidar Đ.
AU  - Ivanovski, Valentin N.
AU  - Codescu, Mirela
AU  - Umićević, Ana
AU  - Barudžija, Tanja
AU  - Patroi, Eros
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6914
AB  - Among novel magnetic intermetallics based on rare earth-transition compounds, the Nd2Fe14B/alpha-Fe isotropic nanocomposites have been obtained by recrystallization from an amorphous phase, prepared by melt spinning. For variable 5 wt.% Fe and 10 wt.% Fe contents we recorded transmission Fe-57 Mossbauer spectra at the room temperature, hardened of the alpha-Fe phase by exchange interactions. The spectra have been analyzed in terms of ten Zeeman sextets and one paramagnetic doublet related to the Nd1.1Fe4B4 phase. One sextet corresponds to the alpha-Fe phase, whereas others are attributed to six non-equivalent Fe sites in the Nd2Fe14B structure, namely 16k(1), 16k(2), 8j(1), 8j(2), 4c, and 4e. The three remaining sextets belong to the Fe3B structure with three inequivalent Fe sites Fe-I(8g), Fe-II(8g) and Fe-III(8g). All relevant parameters for both nanocomposites: the magnetic hyperfine field, the isomer shift and the quadrupole splitting are determined for each of these sites.
C3  - Solid State Phenomena
T1  - Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites
VL  - 170
SP  - 154
EP  - 159
DO  - 10.4028/www.scientific.net/SSP.170.154
ER  - 

@conference{
author = "Cekić, Božidar Đ. and Ivanovski, Valentin N. and Codescu, Mirela and Umićević, Ana and Barudžija, Tanja and Patroi, Eros",
year = "2011",
abstract = "Among novel magnetic intermetallics based on rare earth-transition compounds, the Nd2Fe14B/alpha-Fe isotropic nanocomposites have been obtained by recrystallization from an amorphous phase, prepared by melt spinning. For variable 5 wt.% Fe and 10 wt.% Fe contents we recorded transmission Fe-57 Mossbauer spectra at the room temperature, hardened of the alpha-Fe phase by exchange interactions. The spectra have been analyzed in terms of ten Zeeman sextets and one paramagnetic doublet related to the Nd1.1Fe4B4 phase. One sextet corresponds to the alpha-Fe phase, whereas others are attributed to six non-equivalent Fe sites in the Nd2Fe14B structure, namely 16k(1), 16k(2), 8j(1), 8j(2), 4c, and 4e. The three remaining sextets belong to the Fe3B structure with three inequivalent Fe sites Fe-I(8g), Fe-II(8g) and Fe-III(8g). All relevant parameters for both nanocomposites: the magnetic hyperfine field, the isomer shift and the quadrupole splitting are determined for each of these sites.",
journal = "Solid State Phenomena",
title = "Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites",
volume = "170",
pages = "154-159",
doi = "10.4028/www.scientific.net/SSP.170.154"
}

Cekić, B. Đ., Ivanovski, V. N., Codescu, M., Umićević, A., Barudžija, T.,& Patroi, E.. (2011). Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites. in Solid State Phenomena, 170, 154-159.
https://doi.org/10.4028/www.scientific.net/SSP.170.154

Cekić BĐ, Ivanovski VN, Codescu M, Umićević A, Barudžija T, Patroi E. Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites. in Solid State Phenomena. 2011;170:154-159.
doi:10.4028/www.scientific.net/SSP.170.154 .

Cekić, Božidar Đ., Ivanovski, Valentin N., Codescu, Mirela, Umićević, Ana, Barudžija, Tanja, Patroi, Eros, "Mossbauer spectroscopic analysis of Nd2Fe14B/alpha-Fe hard magnetic nanocomposites" in Solid State Phenomena, 170 (2011):154-159,
https://doi.org/10.4028/www.scientific.net/SSP.170.154 . .

TY  - JOUR
AU  - Ćirić, Katarina D.
AU  - Koteski, Vasil J.
AU  - Stojić, Dragica Lj.
AU  - Radaković, Jana
AU  - Ivanovski, Valentin N.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3997
AB  - Hydrogen induced modifications to the structural, electronic and bonding properties of HfNi are investigated by performing first principles calculations. The full-potential linearized augmented plane waves (FP-LAPW) code based on the density functional theory (DFT) was used. The charge transfer and bonding between the constituent atoms is examined by means of the Baders atoms in molecule (AIM) theory. The calculated enthalpies of formation of HfNi, HfNiH and HfNiH(3) are -53.5 kJ/mol atom, -17.3 kJ/molH and -34.6 kJ/molH. They are found to be in a good agreement with the experimental and semi-empirical values. The calculated stability of the hydrides is in agreement with their hydrogen absorption ability. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - HfNi and its hydrides - First principles calculations
VL  - 35
IS  - 8
SP  - 3572
EP  - 3577
DO  - 10.1016/j.ijhydene.2010.01.127
ER  - 

@article{
author = "Ćirić, Katarina D. and Koteski, Vasil J. and Stojić, Dragica Lj. and Radaković, Jana and Ivanovski, Valentin N.",
year = "2010",
abstract = "Hydrogen induced modifications to the structural, electronic and bonding properties of HfNi are investigated by performing first principles calculations. The full-potential linearized augmented plane waves (FP-LAPW) code based on the density functional theory (DFT) was used. The charge transfer and bonding between the constituent atoms is examined by means of the Baders atoms in molecule (AIM) theory. The calculated enthalpies of formation of HfNi, HfNiH and HfNiH(3) are -53.5 kJ/mol atom, -17.3 kJ/molH and -34.6 kJ/molH. They are found to be in a good agreement with the experimental and semi-empirical values. The calculated stability of the hydrides is in agreement with their hydrogen absorption ability. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "HfNi and its hydrides - First principles calculations",
volume = "35",
number = "8",
pages = "3572-3577",
doi = "10.1016/j.ijhydene.2010.01.127"
}

Ćirić, K. D., Koteski, V. J., Stojić, D. Lj., Radaković, J.,& Ivanovski, V. N.. (2010). HfNi and its hydrides - First principles calculations. in International Journal of Hydrogen Energy, 35(8), 3572-3577.
https://doi.org/10.1016/j.ijhydene.2010.01.127

Ćirić KD, Koteski VJ, Stojić DL, Radaković J, Ivanovski VN. HfNi and its hydrides - First principles calculations. in International Journal of Hydrogen Energy. 2010;35(8):3572-3577.
doi:10.1016/j.ijhydene.2010.01.127 .

Ćirić, Katarina D., Koteski, Vasil J., Stojić, Dragica Lj., Radaković, Jana, Ivanovski, Valentin N., "HfNi and its hydrides - First principles calculations" in International Journal of Hydrogen Energy, 35, no. 8 (2010):3572-3577,
https://doi.org/10.1016/j.ijhydene.2010.01.127 . .

TY  - JOUR
AU  - Radaković, Jana
AU  - Ćirić, Katarina D.
AU  - Belošević-Čavor, Jelena
AU  - Koteski, Vasil J.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4042
AB  - Ab initio calculations of the structural, electronic and thermodynamic properties of Hf2Ni, HfNi, HfNi2 and HfNi5 are presented. Using all-electron augmented plane waves plus local orbitals (APW+lo) method the relative stability of the selected compounds was determined by calculating their enthalpies of formation and cohesive energies. In addition, their electronic structure and bonding properties were determined. The results are discussed in view of the potential application of these intermetallics as materials for hydrogen storage. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Computational Materials Science
T1  - First-principles study of the thermodynamic properties and electronic structure of compounds from Hf-Ni phase system
VL  - 49
IS  - 1
SP  - 55
EP  - 59
DO  - 10.1016/j.commatsci.2010.04.019
ER  - 

@article{
author = "Radaković, Jana and Ćirić, Katarina D. and Belošević-Čavor, Jelena and Koteski, Vasil J.",
year = "2010",
abstract = "Ab initio calculations of the structural, electronic and thermodynamic properties of Hf2Ni, HfNi, HfNi2 and HfNi5 are presented. Using all-electron augmented plane waves plus local orbitals (APW+lo) method the relative stability of the selected compounds was determined by calculating their enthalpies of formation and cohesive energies. In addition, their electronic structure and bonding properties were determined. The results are discussed in view of the potential application of these intermetallics as materials for hydrogen storage. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Computational Materials Science",
title = "First-principles study of the thermodynamic properties and electronic structure of compounds from Hf-Ni phase system",
volume = "49",
number = "1",
pages = "55-59",
doi = "10.1016/j.commatsci.2010.04.019"
}

Radaković, J., Ćirić, K. D., Belošević-Čavor, J.,& Koteski, V. J.. (2010). First-principles study of the thermodynamic properties and electronic structure of compounds from Hf-Ni phase system. in Computational Materials Science, 49(1), 55-59.
https://doi.org/10.1016/j.commatsci.2010.04.019

Radaković J, Ćirić KD, Belošević-Čavor J, Koteski VJ. First-principles study of the thermodynamic properties and electronic structure of compounds from Hf-Ni phase system. in Computational Materials Science. 2010;49(1):55-59.
doi:10.1016/j.commatsci.2010.04.019 .

Radaković, Jana, Ćirić, Katarina D., Belošević-Čavor, Jelena, Koteski, Vasil J., "First-principles study of the thermodynamic properties and electronic structure of compounds from Hf-Ni phase system" in Computational Materials Science, 49, no. 1 (2010):55-59,
https://doi.org/10.1016/j.commatsci.2010.04.019 . .

TY  - JOUR
AU  - Koteski, Vasil J.
AU  - Doka-Yamigno, S.
AU  - Hofstetter, J.
AU  - Rusu, M.
AU  - Mahnke, Heinz-Eberhard
AU  - Lux-Steiner, M. Ch
AU  - Schedel-Niedrig, Th
AU  - Arushanov, E.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4292
AB  - We present here a complementary study on germanium doping of the wider-band-gap CuGaSe2 (CGS) chalcopyrite. In photoluminescence studies, the occurrence of a new emission line was identified as Ge related and explained as a donor-acceptor-pair recombination. The precise role the Ge is playing in this doping of CGS is revealed by x-ray absorption spectroscopy and ab initio calculations based on the density-functional theory. Extended x-ray absorption fine-structure spectroscopy (EXAFS) as well as x-ray absorption near-edge spectroscopy performed at the Ge K-, Cu K-, and Ga K-edge show that the Ge dopants occupy the cationic sites of Ge-Cu or Ge-Ga of the host lattice. The complementary ab initio calculations support the EXAFS results. They further indicate that the incorporated Ge atoms preferentially occupy Ga sites when relaxation around the dopant is taken into account. Additionally, our corresponding theoretical band-structure model predicts the existence of additional localized electronic acceptor and donor defect bands within the band gap of CuGaSe2 originating from a strong covalent interaction between Ge 4s and Se 4p states for Ge atoms tetrahedrally surrounded by the Se nearest-neighbor atoms. A theoretically predicted antibonding Ge-Se 4sp(3) defect band appearing well above the Fermi level for the Ge-Ga(1+) point-defect system can be directly linked to a Ge-dopant-related donor-acceptor-pair transition as observed in our photoluminescence spectra.
T2  - Physical Review B: Condensed Matter and Materials Physics
T1  - Germanium doping of wider-band-gap CuGaSe2 chalcopyrites: Local and electronic structure
VL  - 81
IS  - 24
DO  - 10.1103/PhysRevB.81.245213
ER  - 

@article{
author = "Koteski, Vasil J. and Doka-Yamigno, S. and Hofstetter, J. and Rusu, M. and Mahnke, Heinz-Eberhard and Lux-Steiner, M. Ch and Schedel-Niedrig, Th and Arushanov, E.",
year = "2010",
abstract = "We present here a complementary study on germanium doping of the wider-band-gap CuGaSe2 (CGS) chalcopyrite. In photoluminescence studies, the occurrence of a new emission line was identified as Ge related and explained as a donor-acceptor-pair recombination. The precise role the Ge is playing in this doping of CGS is revealed by x-ray absorption spectroscopy and ab initio calculations based on the density-functional theory. Extended x-ray absorption fine-structure spectroscopy (EXAFS) as well as x-ray absorption near-edge spectroscopy performed at the Ge K-, Cu K-, and Ga K-edge show that the Ge dopants occupy the cationic sites of Ge-Cu or Ge-Ga of the host lattice. The complementary ab initio calculations support the EXAFS results. They further indicate that the incorporated Ge atoms preferentially occupy Ga sites when relaxation around the dopant is taken into account. Additionally, our corresponding theoretical band-structure model predicts the existence of additional localized electronic acceptor and donor defect bands within the band gap of CuGaSe2 originating from a strong covalent interaction between Ge 4s and Se 4p states for Ge atoms tetrahedrally surrounded by the Se nearest-neighbor atoms. A theoretically predicted antibonding Ge-Se 4sp(3) defect band appearing well above the Fermi level for the Ge-Ga(1+) point-defect system can be directly linked to a Ge-dopant-related donor-acceptor-pair transition as observed in our photoluminescence spectra.",
journal = "Physical Review B: Condensed Matter and Materials Physics",
title = "Germanium doping of wider-band-gap CuGaSe2 chalcopyrites: Local and electronic structure",
volume = "81",
number = "24",
doi = "10.1103/PhysRevB.81.245213"
}

Koteski, V. J., Doka-Yamigno, S., Hofstetter, J., Rusu, M., Mahnke, H., Lux-Steiner, M. C., Schedel-Niedrig, T.,& Arushanov, E.. (2010). Germanium doping of wider-band-gap CuGaSe2 chalcopyrites: Local and electronic structure. in Physical Review B: Condensed Matter and Materials Physics, 81(24).
https://doi.org/10.1103/PhysRevB.81.245213

Koteski VJ, Doka-Yamigno S, Hofstetter J, Rusu M, Mahnke H, Lux-Steiner MC, Schedel-Niedrig T, Arushanov E. Germanium doping of wider-band-gap CuGaSe2 chalcopyrites: Local and electronic structure. in Physical Review B: Condensed Matter and Materials Physics. 2010;81(24).
doi:10.1103/PhysRevB.81.245213 .

Koteski, Vasil J., Doka-Yamigno, S., Hofstetter, J., Rusu, M., Mahnke, Heinz-Eberhard, Lux-Steiner, M. Ch, Schedel-Niedrig, Th, Arushanov, E., "Germanium doping of wider-band-gap CuGaSe2 chalcopyrites: Local and electronic structure" in Physical Review B: Condensed Matter and Materials Physics, 81, no. 24 (2010),
https://doi.org/10.1103/PhysRevB.81.245213 . .

TY  - JOUR
AU  - Cekić, Božidar Đ.
AU  - Umićević, Ana
AU  - Ivanovski, Valentin N.
AU  - Koteski, Vasil J.
AU  - Belošević-Čavor, Jelena
AU  - Pavlović, Suncan
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6807
AB  - The time differential perturbed angular correlation technique was used to observe the magnetic dipole and electric quadrupole interactions of (181)Ta probe in the Ni-5 at.% Hf alloy from 78 to 1131 K. The presence of the Larmor precession frequency of (181)Ta in the Ni(Hf) solid solution phase confirms the Ni dominant concentration for the onset of ferromagnetism in the Ni-Hf alloys. A very weak quadrupole interaction originates from imperfections in the HfNi(5) phase formed during melting procedure. The third observed quadrupole interaction corresponds to the Ta probe in the HfO(2) contamination due to internal oxidation of the sample.
T2  - Journal of Alloys and Compounds
T1  - The time differential perturbed angular correlation study of the Ni-5 at.% Hf alloy
VL  - 480
IS  - 1
SP  - 40
EP  - 42
DO  - 10.1016/j.jallcom.2008.09.184
ER  - 

@article{
author = "Cekić, Božidar Đ. and Umićević, Ana and Ivanovski, Valentin N. and Koteski, Vasil J. and Belošević-Čavor, Jelena and Pavlović, Suncan",
year = "2009",
abstract = "The time differential perturbed angular correlation technique was used to observe the magnetic dipole and electric quadrupole interactions of (181)Ta probe in the Ni-5 at.% Hf alloy from 78 to 1131 K. The presence of the Larmor precession frequency of (181)Ta in the Ni(Hf) solid solution phase confirms the Ni dominant concentration for the onset of ferromagnetism in the Ni-Hf alloys. A very weak quadrupole interaction originates from imperfections in the HfNi(5) phase formed during melting procedure. The third observed quadrupole interaction corresponds to the Ta probe in the HfO(2) contamination due to internal oxidation of the sample.",
journal = "Journal of Alloys and Compounds",
title = "The time differential perturbed angular correlation study of the Ni-5 at.% Hf alloy",
volume = "480",
number = "1",
pages = "40-42",
doi = "10.1016/j.jallcom.2008.09.184"
}

Cekić, B. Đ., Umićević, A., Ivanovski, V. N., Koteski, V. J., Belošević-Čavor, J.,& Pavlović, S.. (2009). The time differential perturbed angular correlation study of the Ni-5 at.% Hf alloy. in Journal of Alloys and Compounds, 480(1), 40-42.
https://doi.org/10.1016/j.jallcom.2008.09.184

Cekić BĐ, Umićević A, Ivanovski VN, Koteski VJ, Belošević-Čavor J, Pavlović S. The time differential perturbed angular correlation study of the Ni-5 at.% Hf alloy. in Journal of Alloys and Compounds. 2009;480(1):40-42.
doi:10.1016/j.jallcom.2008.09.184 .

Cekić, Božidar Đ., Umićević, Ana, Ivanovski, Valentin N., Koteski, Vasil J., Belošević-Čavor, Jelena, Pavlović, Suncan, "The time differential perturbed angular correlation study of the Ni-5 at.% Hf alloy" in Journal of Alloys and Compounds, 480, no. 1 (2009):40-42,
https://doi.org/10.1016/j.jallcom.2008.09.184 . .

TY  - JOUR
AU  - Umićević, Ana
AU  - Cekić, Božidar Đ.
AU  - Ivanovski, Valentin N.
AU  - Koteski, Vasil J.
AU  - Belošević-Čavor, Jelena
AU  - Šiljegović, Milorad
AU  - Pavlović, S.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3694
AB  - The hyperfine interactions of Ta-181 probe in the nickel-2 at.% hafnium alloy have been studied by the perturbed angular correlation method in the temperature range 78-1131K. The magnitude of the magnetic dipole interaction of Hf-181/Ta-181 substituting in ferromagnetic Ni(Hf) solid solution decreases with increasing temperature. As a result of the restricted solid solubility of Hf in Ni, a second phase (HfNi5) in the Ni-Hf sample was detected. Hf-181/Ta-181 which resides in HfNi5 senses weak electric quadrupole interaction. The observed anomalous temperature behavior was ascribed to distortions in the HfNi5 cubic phase. The third measured hyperfine interaction corresponds to the quadrupole interaction of Hf-181/Ta-181 positioned in HfO2 contamination originating from an annealing procedure above 900 K.
T2  - Journal of Alloys and Compounds
T1  - Magnetic dipole and electric quadrupole interactions of 181Ta probe in Ni-Hf alloy
VL  - 475
IS  - 1-2
SP  - 38
EP  - 41
DO  - 10.1016/j.jallcom.2008.07.107
ER  - 

@article{
author = "Umićević, Ana and Cekić, Božidar Đ. and Ivanovski, Valentin N. and Koteski, Vasil J. and Belošević-Čavor, Jelena and Šiljegović, Milorad and Pavlović, S.",
year = "2009",
abstract = "The hyperfine interactions of Ta-181 probe in the nickel-2 at.% hafnium alloy have been studied by the perturbed angular correlation method in the temperature range 78-1131K. The magnitude of the magnetic dipole interaction of Hf-181/Ta-181 substituting in ferromagnetic Ni(Hf) solid solution decreases with increasing temperature. As a result of the restricted solid solubility of Hf in Ni, a second phase (HfNi5) in the Ni-Hf sample was detected. Hf-181/Ta-181 which resides in HfNi5 senses weak electric quadrupole interaction. The observed anomalous temperature behavior was ascribed to distortions in the HfNi5 cubic phase. The third measured hyperfine interaction corresponds to the quadrupole interaction of Hf-181/Ta-181 positioned in HfO2 contamination originating from an annealing procedure above 900 K.",
journal = "Journal of Alloys and Compounds",
title = "Magnetic dipole and electric quadrupole interactions of 181Ta probe in Ni-Hf alloy",
volume = "475",
number = "1-2",
pages = "38-41",
doi = "10.1016/j.jallcom.2008.07.107"
}

Umićević, A., Cekić, B. Đ., Ivanovski, V. N., Koteski, V. J., Belošević-Čavor, J., Šiljegović, M.,& Pavlović, S.. (2009). Magnetic dipole and electric quadrupole interactions of 181Ta probe in Ni-Hf alloy. in Journal of Alloys and Compounds, 475(1-2), 38-41.
https://doi.org/10.1016/j.jallcom.2008.07.107

Umićević A, Cekić BĐ, Ivanovski VN, Koteski VJ, Belošević-Čavor J, Šiljegović M, Pavlović S. Magnetic dipole and electric quadrupole interactions of 181Ta probe in Ni-Hf alloy. in Journal of Alloys and Compounds. 2009;475(1-2):38-41.
doi:10.1016/j.jallcom.2008.07.107 .

Umićević, Ana, Cekić, Božidar Đ., Ivanovski, Valentin N., Koteski, Vasil J., Belošević-Čavor, Jelena, Šiljegović, Milorad, Pavlović, S., "Magnetic dipole and electric quadrupole interactions of 181Ta probe in Ni-Hf alloy" in Journal of Alloys and Compounds, 475, no. 1-2 (2009):38-41,
https://doi.org/10.1016/j.jallcom.2008.07.107 . .

TY  - JOUR
AU  - Stojić, Dragica Lj.
AU  - Kumrić, Sandra V.
AU  - Belošević-Čavor, Jelena
AU  - Radaković, Jana
AU  - Cekić, Božidar Đ.
AU  - Mentus, Slavko V.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3719
AB  - The intermetallic compound (HfNi)-Ni-2 was the subject of investigations by several methods. The relative stability was checked by calculating its enthalpy and cohesive properties, using the augmented plane wave plus local orbitals (APW + lo) method of ab initio calculations. The kinetics of hydrogen absorption in this compound was investigated in the temperature range from 573 to 823 K, under the constant hydrogen pressure of 1 bar. The obtained rate constants, k (s(-1)), and hydriding capacities (H/M) are as follows: 0.00038 (0.69), 0.00131 (0.95), 0.00246 (1.13) and 0.0042 (0.92) for temperatures 573, 673, 723 and 823 K, respectively. The changes in crystal structure and morphology caused by multiple hydriding/dehydriding cycles were followed by XRD and SEM. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Hydridic, thermodynamic and kinetic properties of Hf2Ni intermetallic phase
VL  - 34
IS  - 9
SP  - 3764
EP  - 3770
DO  - 10.1016/j.ijhydene.2009.02.055
ER  - 

@article{
author = "Stojić, Dragica Lj. and Kumrić, Sandra V. and Belošević-Čavor, Jelena and Radaković, Jana and Cekić, Božidar Đ. and Mentus, Slavko V.",
year = "2009",
abstract = "The intermetallic compound (HfNi)-Ni-2 was the subject of investigations by several methods. The relative stability was checked by calculating its enthalpy and cohesive properties, using the augmented plane wave plus local orbitals (APW + lo) method of ab initio calculations. The kinetics of hydrogen absorption in this compound was investigated in the temperature range from 573 to 823 K, under the constant hydrogen pressure of 1 bar. The obtained rate constants, k (s(-1)), and hydriding capacities (H/M) are as follows: 0.00038 (0.69), 0.00131 (0.95), 0.00246 (1.13) and 0.0042 (0.92) for temperatures 573, 673, 723 and 823 K, respectively. The changes in crystal structure and morphology caused by multiple hydriding/dehydriding cycles were followed by XRD and SEM. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Hydridic, thermodynamic and kinetic properties of Hf2Ni intermetallic phase",
volume = "34",
number = "9",
pages = "3764-3770",
doi = "10.1016/j.ijhydene.2009.02.055"
}

Stojić, D. Lj., Kumrić, S. V., Belošević-Čavor, J., Radaković, J., Cekić, B. Đ.,& Mentus, S. V.. (2009). Hydridic, thermodynamic and kinetic properties of Hf2Ni intermetallic phase. in International Journal of Hydrogen Energy, 34(9), 3764-3770.
https://doi.org/10.1016/j.ijhydene.2009.02.055

Stojić DL, Kumrić SV, Belošević-Čavor J, Radaković J, Cekić BĐ, Mentus SV. Hydridic, thermodynamic and kinetic properties of Hf2Ni intermetallic phase. in International Journal of Hydrogen Energy. 2009;34(9):3764-3770.
doi:10.1016/j.ijhydene.2009.02.055 .

Stojić, Dragica Lj., Kumrić, Sandra V., Belošević-Čavor, Jelena, Radaković, Jana, Cekić, Božidar Đ., Mentus, Slavko V., "Hydridic, thermodynamic and kinetic properties of Hf2Ni intermetallic phase" in International Journal of Hydrogen Energy, 34, no. 9 (2009):3764-3770,
https://doi.org/10.1016/j.ijhydene.2009.02.055 . .

TY  - JOUR
AU  - Wodniecki, P.
AU  - Kulinska, A.
AU  - Wodniecka, B.
AU  - Belošević-Čavor, Jelena
AU  - Koteski, Vasil J.
AU  - Uhrmacher, M.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3710
AB  - The hyperfine quadrupole interaction parameters and their temperature dependences for (181)Ta and (111)Cd probes in Ti(2)Pd compound were determined experimentally by means of the perturbed angular correlation (PAC) technique. In addition, ab initio calculations using all-electron augmented plane wave plus local orbitals (APW + lo) method have been performed. Through the comparison of the calculated and measured electric field gradients (EFG) it was established that both Ta and Cd occupy 4(e) Ti position in the Ti(2)Pd compound. (C) 2008 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Electric field gradients at Ta and Cd in Ti(2)Pd compound
VL  - 477
IS  - 1-2
SP  - 36
EP  - 39
DO  - 10.1016/j.jallcom.2008.10.099
ER  - 

@article{
author = "Wodniecki, P. and Kulinska, A. and Wodniecka, B. and Belošević-Čavor, Jelena and Koteski, Vasil J. and Uhrmacher, M.",
year = "2009",
abstract = "The hyperfine quadrupole interaction parameters and their temperature dependences for (181)Ta and (111)Cd probes in Ti(2)Pd compound were determined experimentally by means of the perturbed angular correlation (PAC) technique. In addition, ab initio calculations using all-electron augmented plane wave plus local orbitals (APW + lo) method have been performed. Through the comparison of the calculated and measured electric field gradients (EFG) it was established that both Ta and Cd occupy 4(e) Ti position in the Ti(2)Pd compound. (C) 2008 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Electric field gradients at Ta and Cd in Ti(2)Pd compound",
volume = "477",
number = "1-2",
pages = "36-39",
doi = "10.1016/j.jallcom.2008.10.099"
}

Wodniecki, P., Kulinska, A., Wodniecka, B., Belošević-Čavor, J., Koteski, V. J.,& Uhrmacher, M.. (2009). Electric field gradients at Ta and Cd in Ti(2)Pd compound. in Journal of Alloys and Compounds, 477(1-2), 36-39.
https://doi.org/10.1016/j.jallcom.2008.10.099

Wodniecki P, Kulinska A, Wodniecka B, Belošević-Čavor J, Koteski VJ, Uhrmacher M. Electric field gradients at Ta and Cd in Ti(2)Pd compound. in Journal of Alloys and Compounds. 2009;477(1-2):36-39.
doi:10.1016/j.jallcom.2008.10.099 .

Wodniecki, P., Kulinska, A., Wodniecka, B., Belošević-Čavor, Jelena, Koteski, Vasil J., Uhrmacher, M., "Electric field gradients at Ta and Cd in Ti(2)Pd compound" in Journal of Alloys and Compounds, 477, no. 1-2 (2009):36-39,
https://doi.org/10.1016/j.jallcom.2008.10.099 . .

TY  - JOUR
AU  - Wodniecki, P.
AU  - Kulinska, A.
AU  - Wodniecka, B.
AU  - Belošević-Čavor, Jelena
AU  - Koteski, Vasil J.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3725
AB  - The hyperfine quadrupole interaction parameters and their temperature dependence for Hf-181/Ta-181 probe in TiAl3 compound were determined using the time differential perturbed angular correlation (TDPAC) method. in addition, ab initio calculations using the augmented plane wave plus local orbitals (APW+ lo) method as implemented in the WIEN2k code, within the framework of the density functional theory(DFT) have been performed. Through the comparison of the calculated and measured electric field gradients (EFG) it was established that Ta occupies Ti 2(a) position, while Cd probe is settled at the Al 4(d) site. (c) 2009 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Experimental and ab initio study of the electric field gradients at Ta and Cd impurities in TiAl3
VL  - 479
IS  - 1-2
SP  - 56
EP  - 59
DO  - 10.1016/j.jallcom.2009.01.018
ER  - 

@article{
author = "Wodniecki, P. and Kulinska, A. and Wodniecka, B. and Belošević-Čavor, Jelena and Koteski, Vasil J.",
year = "2009",
abstract = "The hyperfine quadrupole interaction parameters and their temperature dependence for Hf-181/Ta-181 probe in TiAl3 compound were determined using the time differential perturbed angular correlation (TDPAC) method. in addition, ab initio calculations using the augmented plane wave plus local orbitals (APW+ lo) method as implemented in the WIEN2k code, within the framework of the density functional theory(DFT) have been performed. Through the comparison of the calculated and measured electric field gradients (EFG) it was established that Ta occupies Ti 2(a) position, while Cd probe is settled at the Al 4(d) site. (c) 2009 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Experimental and ab initio study of the electric field gradients at Ta and Cd impurities in TiAl3",
volume = "479",
number = "1-2",
pages = "56-59",
doi = "10.1016/j.jallcom.2009.01.018"
}

Wodniecki, P., Kulinska, A., Wodniecka, B., Belošević-Čavor, J.,& Koteski, V. J.. (2009). Experimental and ab initio study of the electric field gradients at Ta and Cd impurities in TiAl3. in Journal of Alloys and Compounds, 479(1-2), 56-59.
https://doi.org/10.1016/j.jallcom.2009.01.018

Wodniecki P, Kulinska A, Wodniecka B, Belošević-Čavor J, Koteski VJ. Experimental and ab initio study of the electric field gradients at Ta and Cd impurities in TiAl3. in Journal of Alloys and Compounds. 2009;479(1-2):56-59.
doi:10.1016/j.jallcom.2009.01.018 .

Wodniecki, P., Kulinska, A., Wodniecka, B., Belošević-Čavor, Jelena, Koteski, Vasil J., "Experimental and ab initio study of the electric field gradients at Ta and Cd impurities in TiAl3" in Journal of Alloys and Compounds, 479, no. 1-2 (2009):56-59,
https://doi.org/10.1016/j.jallcom.2009.01.018 . .

TY  - JOUR
AU  - Stojić, Dragica Lj.
AU  - Grozdić, Tomislav D.
AU  - Umićević, Ana
AU  - Maksić, Aleksandar
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3553
AB  - Faraday efficiencies and energy consumptions of a small commercial proton exchange membrane (PEM) and an alkaline electrolyzer designed at our laboratory and equipped with different cathode materials were determined. Our experimental data indicate that the alkaline electrolyzer has a higher Faraday efficiency than the PEM electrolyzer, but, on the other hand, less energy is required for the PEM electrolyzer compared with the alkaline one. The results are discussed with regard to the special advantages of electrolyzers of both types.
T2  - Russian Journal of Physical Chemistry A
T1  - A Comparison of Alkaline and Proton Exchange Membrane Electrolyzers
VL  - 82
IS  - 11
SP  - 1958
EP  - 1960
DO  - 10.1134/S0036024408110289
ER  - 

@article{
author = "Stojić, Dragica Lj. and Grozdić, Tomislav D. and Umićević, Ana and Maksić, Aleksandar",
year = "2008",
abstract = "Faraday efficiencies and energy consumptions of a small commercial proton exchange membrane (PEM) and an alkaline electrolyzer designed at our laboratory and equipped with different cathode materials were determined. Our experimental data indicate that the alkaline electrolyzer has a higher Faraday efficiency than the PEM electrolyzer, but, on the other hand, less energy is required for the PEM electrolyzer compared with the alkaline one. The results are discussed with regard to the special advantages of electrolyzers of both types.",
journal = "Russian Journal of Physical Chemistry A",
title = "A Comparison of Alkaline and Proton Exchange Membrane Electrolyzers",
volume = "82",
number = "11",
pages = "1958-1960",
doi = "10.1134/S0036024408110289"
}

Stojić, D. Lj., Grozdić, T. D., Umićević, A.,& Maksić, A.. (2008). A Comparison of Alkaline and Proton Exchange Membrane Electrolyzers. in Russian Journal of Physical Chemistry A, 82(11), 1958-1960.
https://doi.org/10.1134/S0036024408110289

Stojić DL, Grozdić TD, Umićević A, Maksić A. A Comparison of Alkaline and Proton Exchange Membrane Electrolyzers. in Russian Journal of Physical Chemistry A. 2008;82(11):1958-1960.
doi:10.1134/S0036024408110289 .

Stojić, Dragica Lj., Grozdić, Tomislav D., Umićević, Ana, Maksić, Aleksandar, "A Comparison of Alkaline and Proton Exchange Membrane Electrolyzers" in Russian Journal of Physical Chemistry A, 82, no. 11 (2008):1958-1960,
https://doi.org/10.1134/S0036024408110289 . .

TY  - JOUR
AU  - Belošević-Čavor, Jelena
AU  - Koteski, Vasil J.
AU  - Cekić, Božidar Đ.
AU  - Umićević, Ana
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3569
AB  - A detailed theoretical study of the structure and electric field gradients (EFG) of the Hf2Ag, HfAg, Zr2Ag and ZrAg compounds is presented. Using all-electron augmented plane waves plus local orbitals (APW + lo) formalism, the equilibrium volumes and EFGs for the mentioned compounds are calculated. We have also performed supercell calculations with Cd and Ta impurities. Through the comparison of theoretical and experimental EFGs in these cases, we elucidate the role played by the Cd probe in the time-differential perturbed angular correlation (TDPAC) measurements of Hf-Ag and Zr-Ag compounds. (c) 2008 Elsevier B.V. All rights reserved.
T2  - Computational Materials Science
T1  - A first-principle study of the site preference of Cd impurity in Hf-Ag and Zr-Ag compounds
VL  - 43
IS  - 4
SP  - 867
EP  - 871
DO  - 10.1016/j.commatsci.2008.02.015
ER  - 

@article{
author = "Belošević-Čavor, Jelena and Koteski, Vasil J. and Cekić, Božidar Đ. and Umićević, Ana",
year = "2008",
abstract = "A detailed theoretical study of the structure and electric field gradients (EFG) of the Hf2Ag, HfAg, Zr2Ag and ZrAg compounds is presented. Using all-electron augmented plane waves plus local orbitals (APW + lo) formalism, the equilibrium volumes and EFGs for the mentioned compounds are calculated. We have also performed supercell calculations with Cd and Ta impurities. Through the comparison of theoretical and experimental EFGs in these cases, we elucidate the role played by the Cd probe in the time-differential perturbed angular correlation (TDPAC) measurements of Hf-Ag and Zr-Ag compounds. (c) 2008 Elsevier B.V. All rights reserved.",
journal = "Computational Materials Science",
title = "A first-principle study of the site preference of Cd impurity in Hf-Ag and Zr-Ag compounds",
volume = "43",
number = "4",
pages = "867-871",
doi = "10.1016/j.commatsci.2008.02.015"
}

Belošević-Čavor, J., Koteski, V. J., Cekić, B. Đ.,& Umićević, A.. (2008). A first-principle study of the site preference of Cd impurity in Hf-Ag and Zr-Ag compounds. in Computational Materials Science, 43(4), 867-871.
https://doi.org/10.1016/j.commatsci.2008.02.015

Belošević-Čavor J, Koteski VJ, Cekić BĐ, Umićević A. A first-principle study of the site preference of Cd impurity in Hf-Ag and Zr-Ag compounds. in Computational Materials Science. 2008;43(4):867-871.
doi:10.1016/j.commatsci.2008.02.015 .

Belošević-Čavor, Jelena, Koteski, Vasil J., Cekić, Božidar Đ., Umićević, Ana, "A first-principle study of the site preference of Cd impurity in Hf-Ag and Zr-Ag compounds" in Computational Materials Science, 43, no. 4 (2008):867-871,
https://doi.org/10.1016/j.commatsci.2008.02.015 . .

TY  - CONF
AU  - Grozdić, Tomislav D.
AU  - Stojić, Dragica Lj.
AU  - Kumrić, Sandra V.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9362
AB  - The correlation between magnetic properties of cathodic materials on the evolution of hydrogen and the separation factor was found. The cathodes were pure Ni and cathodes with the electrocatalytic coatings of following compositions: Ni-Mo (70- 30%), Ni-V (70-30%), Co-Mo (70-30%) and Fe-Mo (60-40%), on Ni substrate. The electrolyte is standard electrolyte (30% KOH) and electrolyte activated with Co-complex [1].
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry
T1  - Influence of external magnetic field on the electrolytic hydrogen evolution on different cathode materials
VL  - 1
SP  - 276
EP  - 278
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9362
ER  - 

@conference{
author = "Grozdić, Tomislav D. and Stojić, Dragica Lj. and Kumrić, Sandra V.",
year = "2008",
abstract = "The correlation between magnetic properties of cathodic materials on the evolution of hydrogen and the separation factor was found. The cathodes were pure Ni and cathodes with the electrocatalytic coatings of following compositions: Ni-Mo (70- 30%), Ni-V (70-30%), Co-Mo (70-30%) and Fe-Mo (60-40%), on Ni substrate. The electrolyte is standard electrolyte (30% KOH) and electrolyte activated with Co-complex [1].",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry",
title = "Influence of external magnetic field on the electrolytic hydrogen evolution on different cathode materials",
volume = "1",
pages = "276-278",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9362"
}

Grozdić, T. D., Stojić, D. Lj.,& Kumrić, S. V.. (2008). Influence of external magnetic field on the electrolytic hydrogen evolution on different cathode materials. in Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 1, 276-278.
https://hdl.handle.net/21.15107/rcub_vinar_9362

Grozdić TD, Stojić DL, Kumrić SV. Influence of external magnetic field on the electrolytic hydrogen evolution on different cathode materials. in Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry. 2008;1:276-278.
https://hdl.handle.net/21.15107/rcub_vinar_9362 .

Grozdić, Tomislav D., Stojić, Dragica Lj., Kumrić, Sandra V., "Influence of external magnetic field on the electrolytic hydrogen evolution on different cathode materials" in Physical chemistry 2008 : 9th international conference on fundamental and applied aspects of physical chemistry, 1 (2008):276-278,
https://hdl.handle.net/21.15107/rcub_vinar_9362 .

TY  - JOUR
AU  - Koteski, Vasil J.
AU  - Mahnke, Heinz-Eberhard
AU  - Belošević-Čavor, Jelena
AU  - Cekić, Božidar Đ.
AU  - Schumacher, G.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3551
AB  - The lattice relaxation around Mo, Ru, Hf, Ta, W and Re in Ni is investigated by means of X-ray absorption spectroscopy. For all of the investigated concentrations the substitutional lattice position is confirmed except for the higher Hf concentration where different phases are observed. Ail outward relaxation of the neighboring atoms is detected with clear trends of increasing nearest neighbor distances with decreasing valence for the 5d impurities, and separate trends for the 4d impurities. Ab initio supercell calculations within the linearized augmented plane wave formalism are used to complement the experimental results and allow for a better interpretation of the experimental trends in terms of the electronic structure of the impurity. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
T2  - Acta Materialia
T1  - Experimental and theoretical study of lattice relaxation around refractory atoms in nickel
VL  - 56
IS  - 17
SP  - 4601
EP  - 4607
DO  - 10.1016/j.actamat.2008.05.015
ER  - 

@article{
author = "Koteski, Vasil J. and Mahnke, Heinz-Eberhard and Belošević-Čavor, Jelena and Cekić, Božidar Đ. and Schumacher, G.",
year = "2008",
abstract = "The lattice relaxation around Mo, Ru, Hf, Ta, W and Re in Ni is investigated by means of X-ray absorption spectroscopy. For all of the investigated concentrations the substitutional lattice position is confirmed except for the higher Hf concentration where different phases are observed. Ail outward relaxation of the neighboring atoms is detected with clear trends of increasing nearest neighbor distances with decreasing valence for the 5d impurities, and separate trends for the 4d impurities. Ab initio supercell calculations within the linearized augmented plane wave formalism are used to complement the experimental results and allow for a better interpretation of the experimental trends in terms of the electronic structure of the impurity. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.",
journal = "Acta Materialia",
title = "Experimental and theoretical study of lattice relaxation around refractory atoms in nickel",
volume = "56",
number = "17",
pages = "4601-4607",
doi = "10.1016/j.actamat.2008.05.015"
}

Koteski, V. J., Mahnke, H., Belošević-Čavor, J., Cekić, B. Đ.,& Schumacher, G.. (2008). Experimental and theoretical study of lattice relaxation around refractory atoms in nickel. in Acta Materialia, 56(17), 4601-4607.
https://doi.org/10.1016/j.actamat.2008.05.015

Koteski VJ, Mahnke H, Belošević-Čavor J, Cekić BĐ, Schumacher G. Experimental and theoretical study of lattice relaxation around refractory atoms in nickel. in Acta Materialia. 2008;56(17):4601-4607.
doi:10.1016/j.actamat.2008.05.015 .

Koteski, Vasil J., Mahnke, Heinz-Eberhard, Belošević-Čavor, Jelena, Cekić, Božidar Đ., Schumacher, G., "Experimental and theoretical study of lattice relaxation around refractory atoms in nickel" in Acta Materialia, 56, no. 17 (2008):4601-4607,
https://doi.org/10.1016/j.actamat.2008.05.015 . .

TY  - JOUR
AU  - Stojić, Dragica
AU  - Grozdić, Tomislav
AU  - Umićević, Ana
AU  - Maksić, Aleksandar
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12797
AB  - Faraday efficiencies and energy consumptions of a small commercial PEM (Proton Exchange Membrane) and alkaline electrolyser, made in our laboratory with different cathode materials, were determinated. The development of high-efficiency alkaline electrolysers, using different cathode materials (intermetallics alloys of transition metals) and ionic activators, represents the additional step towards the improvement of the electrolytic hydrogen production process in our experiments. On the other hand, PEM electrolysers occupy today important sites in the advanced electrolyses for hydrogen production. Experimental results in this paper indicate that alkaline electrolyser has a higher Faraday efficiency than PEM electrolyser but on the other hand less energy requirement is needed for the PEM electrolyser compared to alkaline one. The results were discussed regarding specific advantages of both types of electrolysers.
T2  - Tehnika - Novi materijali
T1  - Comparison between alkaline and PEM electrolysers
VL  - 16
IS  - 4
SP  - 9
EP  - 12
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12797
ER  - 

@article{
author = "Stojić, Dragica and Grozdić, Tomislav and Umićević, Ana and Maksić, Aleksandar",
year = "2007",
abstract = "Faraday efficiencies and energy consumptions of a small commercial PEM (Proton Exchange Membrane) and alkaline electrolyser, made in our laboratory with different cathode materials, were determinated. The development of high-efficiency alkaline electrolysers, using different cathode materials (intermetallics alloys of transition metals) and ionic activators, represents the additional step towards the improvement of the electrolytic hydrogen production process in our experiments. On the other hand, PEM electrolysers occupy today important sites in the advanced electrolyses for hydrogen production. Experimental results in this paper indicate that alkaline electrolyser has a higher Faraday efficiency than PEM electrolyser but on the other hand less energy requirement is needed for the PEM electrolyser compared to alkaline one. The results were discussed regarding specific advantages of both types of electrolysers.",
journal = "Tehnika - Novi materijali",
title = "Comparison between alkaline and PEM electrolysers",
volume = "16",
number = "4",
pages = "9-12",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12797"
}

Stojić, D., Grozdić, T., Umićević, A.,& Maksić, A.. (2007). Comparison between alkaline and PEM electrolysers. in Tehnika - Novi materijali, 16(4), 9-12.
https://hdl.handle.net/21.15107/rcub_vinar_12797

Stojić D, Grozdić T, Umićević A, Maksić A. Comparison between alkaline and PEM electrolysers. in Tehnika - Novi materijali. 2007;16(4):9-12.
https://hdl.handle.net/21.15107/rcub_vinar_12797 .

Stojić, Dragica, Grozdić, Tomislav, Umićević, Ana, Maksić, Aleksandar, "Comparison between alkaline and PEM electrolysers" in Tehnika - Novi materijali, 16, no. 4 (2007):9-12,
https://hdl.handle.net/21.15107/rcub_vinar_12797 .