TY  - JOUR
AU  - Rašković-Lovre, Željka
AU  - Kurko, Sandra V.
AU  - Ivanović, Nenad
AU  - Fernandez, Jose Francisco
AU  - Ares, Jose-Ramon
AU  - Sturm, Saso
AU  - Mongstad, Trygve
AU  - Novaković, Nikola
AU  - Grbović-Novaković, Jasmina
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1381
AB  - Processes taking place during hydrogen desorption from MgH2 thin films were investigated in as-prepared samples and samples modified by argon ion irradiation. Irradiation was used to produce well-defined defects with depth distribution. It was shown that the size, shape, and concentration of Mg nuclei formed during hydrogen desorption from MgH2 thin films depend on the characteristics and distribution of the induced defects. In as-prepared samples the shape of Mg nuclei is spherical, while in irradiated samples, it is highly irregular. Variations in sample colour were observed during hydrogen desorption and before the creation of Mg nuclei. DFT calculations showed that the observed variations in the optical properties of samples can be explained by changes in MgH2 electronic structure -the appearance of an H-vacancy band within the MgH2 energy gap. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - In-situ desorption of magnesium hydride irradiated and non-irradiated thin films: Relation to optical properties
VL  - 695
SP  - 2381
EP  - 2388
DO  - 10.1016/j.jallcom.2016.11.128
ER  - 

@article{
author = "Rašković-Lovre, Željka and Kurko, Sandra V. and Ivanović, Nenad and Fernandez, Jose Francisco and Ares, Jose-Ramon and Sturm, Saso and Mongstad, Trygve and Novaković, Nikola and Grbović-Novaković, Jasmina",
year = "2017",
abstract = "Processes taking place during hydrogen desorption from MgH2 thin films were investigated in as-prepared samples and samples modified by argon ion irradiation. Irradiation was used to produce well-defined defects with depth distribution. It was shown that the size, shape, and concentration of Mg nuclei formed during hydrogen desorption from MgH2 thin films depend on the characteristics and distribution of the induced defects. In as-prepared samples the shape of Mg nuclei is spherical, while in irradiated samples, it is highly irregular. Variations in sample colour were observed during hydrogen desorption and before the creation of Mg nuclei. DFT calculations showed that the observed variations in the optical properties of samples can be explained by changes in MgH2 electronic structure -the appearance of an H-vacancy band within the MgH2 energy gap. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "In-situ desorption of magnesium hydride irradiated and non-irradiated thin films: Relation to optical properties",
volume = "695",
pages = "2381-2388",
doi = "10.1016/j.jallcom.2016.11.128"
}

Rašković-Lovre, Ž., Kurko, S. V., Ivanović, N., Fernandez, J. F., Ares, J., Sturm, S., Mongstad, T., Novaković, N.,& Grbović-Novaković, J.. (2017). In-situ desorption of magnesium hydride irradiated and non-irradiated thin films: Relation to optical properties. in Journal of Alloys and Compounds, 695, 2381-2388.
https://doi.org/10.1016/j.jallcom.2016.11.128

Rašković-Lovre Ž, Kurko SV, Ivanović N, Fernandez JF, Ares J, Sturm S, Mongstad T, Novaković N, Grbović-Novaković J. In-situ desorption of magnesium hydride irradiated and non-irradiated thin films: Relation to optical properties. in Journal of Alloys and Compounds. 2017;695:2381-2388.
doi:10.1016/j.jallcom.2016.11.128 .

Rašković-Lovre, Željka, Kurko, Sandra V., Ivanović, Nenad, Fernandez, Jose Francisco, Ares, Jose-Ramon, Sturm, Saso, Mongstad, Trygve, Novaković, Nikola, Grbović-Novaković, Jasmina, "In-situ desorption of magnesium hydride irradiated and non-irradiated thin films: Relation to optical properties" in Journal of Alloys and Compounds, 695 (2017):2381-2388,
https://doi.org/10.1016/j.jallcom.2016.11.128 . .

TY  - JOUR
AU  - Milanović, Igor
AU  - Milošević, Sanja S.
AU  - Rašković-Lovre, Željka
AU  - Novaković, Nikola
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
AU  - Fernandez, Jose Francisco
AU  - Sanchez, Carlos
AU  - Grbović-Novaković, Jasmina
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5465
AB  - The influence of TiB2 and SiC ceramics on H-desorption kinetics from MgH2 based composites was investigated and correlated with the microstructure and morphology of the composites. The mechanism of desorption and the activation energy for desorption was investigated by applying non-isothermal kinetic analysis of thermodesorption spectra. It has been shown that TiB2 addition leads to significant decrease of the activation energy for desorption, while SiC addition has effect on the interface reaction between hydride and hydroxide. The mechanism of desorption change from Avrami-Erofeev n=3 for pure MgH2 to Avrami Erofeev n=4 for composite materials. The change from 3 to 4 can be due to the modification of the nucleation process or a change in the dimensionality of the growth. Those high values of n discard a diffusion control as a rate limiting step. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites
VL  - 39
IS  - 4
SP  - 4399
EP  - 4405
DO  - 10.1016/j.ceramint.2012.11.029
ER  - 

@article{
author = "Milanović, Igor and Milošević, Sanja S. and Rašković-Lovre, Željka and Novaković, Nikola and Vujasin, Radojka and Matović, Ljiljana and Fernandez, Jose Francisco and Sanchez, Carlos and Grbović-Novaković, Jasmina",
year = "2013",
abstract = "The influence of TiB2 and SiC ceramics on H-desorption kinetics from MgH2 based composites was investigated and correlated with the microstructure and morphology of the composites. The mechanism of desorption and the activation energy for desorption was investigated by applying non-isothermal kinetic analysis of thermodesorption spectra. It has been shown that TiB2 addition leads to significant decrease of the activation energy for desorption, while SiC addition has effect on the interface reaction between hydride and hydroxide. The mechanism of desorption change from Avrami-Erofeev n=3 for pure MgH2 to Avrami Erofeev n=4 for composite materials. The change from 3 to 4 can be due to the modification of the nucleation process or a change in the dimensionality of the growth. Those high values of n discard a diffusion control as a rate limiting step. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites",
volume = "39",
number = "4",
pages = "4399-4405",
doi = "10.1016/j.ceramint.2012.11.029"
}

Milanović, I., Milošević, S. S., Rašković-Lovre, Ž., Novaković, N., Vujasin, R., Matović, L., Fernandez, J. F., Sanchez, C.,& Grbović-Novaković, J.. (2013). Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites. in Ceramics International, 39(4), 4399-4405.
https://doi.org/10.1016/j.ceramint.2012.11.029

Milanović I, Milošević SS, Rašković-Lovre Ž, Novaković N, Vujasin R, Matović L, Fernandez JF, Sanchez C, Grbović-Novaković J. Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites. in Ceramics International. 2013;39(4):4399-4405.
doi:10.1016/j.ceramint.2012.11.029 .

Milanović, Igor, Milošević, Sanja S., Rašković-Lovre, Željka, Novaković, Nikola, Vujasin, Radojka, Matović, Ljiljana, Fernandez, Jose Francisco, Sanchez, Carlos, Grbović-Novaković, Jasmina, "Microstructure and hydrogen storage properties of MgH2-TiB2-SiC composites" in Ceramics International, 39, no. 4 (2013):4399-4405,
https://doi.org/10.1016/j.ceramint.2012.11.029 . .

TY  - JOUR
AU  - Kurko, Sandra V.
AU  - Milanović, Igor
AU  - Milošević, Sanja S.
AU  - Rašković-Lovre, Željka
AU  - Fernandez, Jose Francisco
AU  - Ares Fernandez, Jose Ramon
AU  - Matović, Ljiljana
AU  - Grbović-Novaković, Jasmina
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5691
AB  - In attempt to improve desorption behaviour of MgH2, the influence of well-defined structural changes induced within a thin surface layer of MgH2 have been investigated. The defects were induced by 30 key C2+ ions irradiation using different fluencies ranging from 10(12)-10(16) ions/cm(2). The hydrogen desorption properties were investigated by thermal desorption spectroscopy analysis (TDS), while kinetics parameters were deduced using non-isothermal kinetic approach. The existence of multiple TDS peaks and different curve shapes indicate difference in desorption mechanism. To understand changes in the rate limiting step, shapes of all desorption peaks have been analyzed using different kinetic models. Regarding the irradiated sample, the function based on Avrami-Erofeev model with n = 4 gives the best fit over theta range from 0.3 to 0.8 while for untreated sample the best fit is obtained for Avrami-Erofeev model with n = 3. The change in mechanism can be attributed to the different way of nuclei growth. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Changes in kinetic parameters of decomposition of MgH2 destabilized by irradiation with C2+ ions
VL  - 38
IS  - 27
SP  - 12199
EP  - 12206
DO  - 10.1016/j.ijhydene.2013.05.132
ER  - 

@article{
author = "Kurko, Sandra V. and Milanović, Igor and Milošević, Sanja S. and Rašković-Lovre, Željka and Fernandez, Jose Francisco and Ares Fernandez, Jose Ramon and Matović, Ljiljana and Grbović-Novaković, Jasmina",
year = "2013",
abstract = "In attempt to improve desorption behaviour of MgH2, the influence of well-defined structural changes induced within a thin surface layer of MgH2 have been investigated. The defects were induced by 30 key C2+ ions irradiation using different fluencies ranging from 10(12)-10(16) ions/cm(2). The hydrogen desorption properties were investigated by thermal desorption spectroscopy analysis (TDS), while kinetics parameters were deduced using non-isothermal kinetic approach. The existence of multiple TDS peaks and different curve shapes indicate difference in desorption mechanism. To understand changes in the rate limiting step, shapes of all desorption peaks have been analyzed using different kinetic models. Regarding the irradiated sample, the function based on Avrami-Erofeev model with n = 4 gives the best fit over theta range from 0.3 to 0.8 while for untreated sample the best fit is obtained for Avrami-Erofeev model with n = 3. The change in mechanism can be attributed to the different way of nuclei growth. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Changes in kinetic parameters of decomposition of MgH2 destabilized by irradiation with C2+ ions",
volume = "38",
number = "27",
pages = "12199-12206",
doi = "10.1016/j.ijhydene.2013.05.132"
}

Kurko, S. V., Milanović, I., Milošević, S. S., Rašković-Lovre, Ž., Fernandez, J. F., Ares Fernandez, J. R., Matović, L.,& Grbović-Novaković, J.. (2013). Changes in kinetic parameters of decomposition of MgH2 destabilized by irradiation with C2+ ions. in International Journal of Hydrogen Energy, 38(27), 12199-12206.
https://doi.org/10.1016/j.ijhydene.2013.05.132

Kurko SV, Milanović I, Milošević SS, Rašković-Lovre Ž, Fernandez JF, Ares Fernandez JR, Matović L, Grbović-Novaković J. Changes in kinetic parameters of decomposition of MgH2 destabilized by irradiation with C2+ ions. in International Journal of Hydrogen Energy. 2013;38(27):12199-12206.
doi:10.1016/j.ijhydene.2013.05.132 .

Kurko, Sandra V., Milanović, Igor, Milošević, Sanja S., Rašković-Lovre, Željka, Fernandez, Jose Francisco, Ares Fernandez, Jose Ramon, Matović, Ljiljana, Grbović-Novaković, Jasmina, "Changes in kinetic parameters of decomposition of MgH2 destabilized by irradiation with C2+ ions" in International Journal of Hydrogen Energy, 38, no. 27 (2013):12199-12206,
https://doi.org/10.1016/j.ijhydene.2013.05.132 . .