TY  - JOUR
AU  - Perović, Marija M.
AU  - Kusigerski, Vladan
AU  - Mraković, Ana Đ.
AU  - Spasojević, Vojislav
AU  - Blanuša, Jovan
AU  - Nikolić, Violeta N.
AU  - Schneeweiss, Oldřich B.
AU  - David, B.
AU  - Pizurova, Nadežda
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/429
AB  - Nanorod ferrous oxalate dihydrate (FeC2O4 x 2H(2)O) which had been synthesized by the microemulsion method, was used as a precursor in the thermal decomposition process performed in air atmosphere. The formation of nanocrystalline hematite as the final product was preceded by the appearence of an intermediate product. Comprehensive study comprising several complementary techniques (x-ray diffraction, transmission electron microscopy, selected area electron diffraction, thermogravimetric/differential thermal analyses and SQUID magnetometry) confirmed that the intermediate product corresponds to the poorly crystalline Fe2O3. Due to the specific nanorod shape and poorly crystalline structure, the investigated Fe2O3 showed high coercive field value of similar to 0.5 T at 5 K. Special attention in this study was devoted to the peculiar magnetic properties of poorly crystalline Fe2O3, which were thoroughly investigated by employing sophisticated experimental procedures such as relaxation of thermoremanent magnetization for different cooling fields, zero field and field cooled memory effects as well as aging experiments for different waiting times. At low temperatures and weak applied magnetic fields, the investigated system behaves similarly to spin glasses, manifesting slow, collective relaxation dynamics of magnetic moments through memory, rejuvenation and aging effects.
T2  - Nanotechnology
T1  - The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate
VL  - 26
IS  - 11
DO  - 10.1088/0957-4484/26/11/115705
ER  - 

@article{
author = "Perović, Marija M. and Kusigerski, Vladan and Mraković, Ana Đ. and Spasojević, Vojislav and Blanuša, Jovan and Nikolić, Violeta N. and Schneeweiss, Oldřich B. and David, B. and Pizurova, Nadežda",
year = "2015",
abstract = "Nanorod ferrous oxalate dihydrate (FeC2O4 x 2H(2)O) which had been synthesized by the microemulsion method, was used as a precursor in the thermal decomposition process performed in air atmosphere. The formation of nanocrystalline hematite as the final product was preceded by the appearence of an intermediate product. Comprehensive study comprising several complementary techniques (x-ray diffraction, transmission electron microscopy, selected area electron diffraction, thermogravimetric/differential thermal analyses and SQUID magnetometry) confirmed that the intermediate product corresponds to the poorly crystalline Fe2O3. Due to the specific nanorod shape and poorly crystalline structure, the investigated Fe2O3 showed high coercive field value of similar to 0.5 T at 5 K. Special attention in this study was devoted to the peculiar magnetic properties of poorly crystalline Fe2O3, which were thoroughly investigated by employing sophisticated experimental procedures such as relaxation of thermoremanent magnetization for different cooling fields, zero field and field cooled memory effects as well as aging experiments for different waiting times. At low temperatures and weak applied magnetic fields, the investigated system behaves similarly to spin glasses, manifesting slow, collective relaxation dynamics of magnetic moments through memory, rejuvenation and aging effects.",
journal = "Nanotechnology",
title = "The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate",
volume = "26",
number = "11",
doi = "10.1088/0957-4484/26/11/115705"
}

Perović, M. M., Kusigerski, V., Mraković, A. Đ., Spasojević, V., Blanuša, J., Nikolić, V. N., Schneeweiss, O. B., David, B.,& Pizurova, N.. (2015). The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate. in Nanotechnology, 26(11).
https://doi.org/10.1088/0957-4484/26/11/115705

Perović MM, Kusigerski V, Mraković AĐ, Spasojević V, Blanuša J, Nikolić VN, Schneeweiss OB, David B, Pizurova N. The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate. in Nanotechnology. 2015;26(11).
doi:10.1088/0957-4484/26/11/115705 .

Perović, Marija M., Kusigerski, Vladan, Mraković, Ana Đ., Spasojević, Vojislav, Blanuša, Jovan, Nikolić, Violeta N., Schneeweiss, Oldřich B., David, B., Pizurova, Nadežda, "The glassy behaviour of poorly crystalline Fe2O3 nanorods obtained by thermal decomposition of ferrous oxalate" in Nanotechnology, 26, no. 11 (2015),
https://doi.org/10.1088/0957-4484/26/11/115705 . .

TY  - CONF
AU  - Lazurova, J.
AU  - Mihalik, M.
AU  - Mihalik, Jr., M.
AU  - Vavra, M.
AU  - Zentkova, M.
AU  - Briancin, J.
AU  - Perović, Marija M.
AU  - Kusigerski, Vladan
AU  - Schneeweiss, Oldřich B.
AU  - Roupcova, P.
AU  - Kamenev, K. V.
AU  - Misek, M.
AU  - Jagličić, Zvonko
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7067
AB  - The effect of particle reduction to nanoscale size and substitution of Mn3+ ions for Fe3+ ions on the crystal structure, lattice dynamics, Mossbauer spectra and magnetic properties in NdFe(1-x)MnxO(3) compounds have been studied. X-ray powder diffraction and Raman spectroscopy revealed that the Jahn-Teller distortion of lattice dominates for samples with x GT 0.4. The average particle size of NdFeO3 nanoparticles (NAP) increases with annealing at 600 degrees C from about 15 nm to 25 nm. The presence of superparamagnetic particles was indicated by Mossbauer measurements in NdFeO3 NAP system. Sextets in NdFe(1-x)MnxO(3) Mssbauer spectra can be modelled with several local environments of Fe3+ induced by substitution. The reduction of dimensionality and the substitution induce a decrease of the Neel temperature T-Nl from 691 K to 544 K for NAP or to 356 K for x = 0.4, however the temperature of spin reorientation T-SR increases with substitution. The saturated magnetization obtained at 1.9 K increases and ferromagnetic component is removed below T-SR with the substitution.
C3  - Journal of Physics: Conference Series
T1  - Magnetic Properties and Mossbauer spectroscopy of NdFe(1-x)MnxO(3)
VL  - 592
DO  - 10.1088/1742-6596/592/1/012117
ER  - 

@conference{
author = "Lazurova, J. and Mihalik, M. and Mihalik, Jr., M. and Vavra, M. and Zentkova, M. and Briancin, J. and Perović, Marija M. and Kusigerski, Vladan and Schneeweiss, Oldřich B. and Roupcova, P. and Kamenev, K. V. and Misek, M. and Jagličić, Zvonko",
year = "2015",
abstract = "The effect of particle reduction to nanoscale size and substitution of Mn3+ ions for Fe3+ ions on the crystal structure, lattice dynamics, Mossbauer spectra and magnetic properties in NdFe(1-x)MnxO(3) compounds have been studied. X-ray powder diffraction and Raman spectroscopy revealed that the Jahn-Teller distortion of lattice dominates for samples with x GT 0.4. The average particle size of NdFeO3 nanoparticles (NAP) increases with annealing at 600 degrees C from about 15 nm to 25 nm. The presence of superparamagnetic particles was indicated by Mossbauer measurements in NdFeO3 NAP system. Sextets in NdFe(1-x)MnxO(3) Mssbauer spectra can be modelled with several local environments of Fe3+ induced by substitution. The reduction of dimensionality and the substitution induce a decrease of the Neel temperature T-Nl from 691 K to 544 K for NAP or to 356 K for x = 0.4, however the temperature of spin reorientation T-SR increases with substitution. The saturated magnetization obtained at 1.9 K increases and ferromagnetic component is removed below T-SR with the substitution.",
journal = "Journal of Physics: Conference Series",
title = "Magnetic Properties and Mossbauer spectroscopy of NdFe(1-x)MnxO(3)",
volume = "592",
doi = "10.1088/1742-6596/592/1/012117"
}

Lazurova, J., Mihalik, M., Mihalik, Jr., M., Vavra, M., Zentkova, M., Briancin, J., Perović, M. M., Kusigerski, V., Schneeweiss, O. B., Roupcova, P., Kamenev, K. V., Misek, M.,& Jagličić, Z.. (2015). Magnetic Properties and Mossbauer spectroscopy of NdFe(1-x)MnxO(3). in Journal of Physics: Conference Series, 592.
https://doi.org/10.1088/1742-6596/592/1/012117

Lazurova J, Mihalik M, Mihalik JM, Vavra M, Zentkova M, Briancin J, Perović MM, Kusigerski V, Schneeweiss OB, Roupcova P, Kamenev KV, Misek M, Jagličić Z. Magnetic Properties and Mossbauer spectroscopy of NdFe(1-x)MnxO(3). in Journal of Physics: Conference Series. 2015;592.
doi:10.1088/1742-6596/592/1/012117 .

Lazurova, J., Mihalik, M., Mihalik, Jr., M., Vavra, M., Zentkova, M., Briancin, J., Perović, Marija M., Kusigerski, Vladan, Schneeweiss, Oldřich B., Roupcova, P., Kamenev, K. V., Misek, M., Jagličić, Zvonko, "Magnetic Properties and Mossbauer spectroscopy of NdFe(1-x)MnxO(3)" in Journal of Physics: Conference Series, 592 (2015),
https://doi.org/10.1088/1742-6596/592/1/012117 . .