TY  - JOUR
AU  - Krehula, Stjepko
AU  - Ristić, Mira
AU  - Kubuki, Shiro
AU  - Iida, Yusuke
AU  - Perović, Marija M.
AU  - Fabian, Martin
AU  - Musić, Svetozar
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/265
AB  - Various mixed Fe-Ga oxides were prepared by the calcination of mixed Fe-Ga oxyhydroxide precursors (alpha-Fe1 xGaxOOH solid solutions, 0 LT = x LT = 1) at 500 or 1000 degrees C. Isostructural corundum-type oxides alpha-Fe2O3 and alpha-Ga2O3, as well as their solid solutions alpha-Fe-2 xGaxO3 in the entire concentration range (x = 0, 0.4, 1, 1.6 and 2) were prepared by calcination at 500 degrees C. An increase in the Ga content in alpha-Fe2 xGaxO3 resulted in a reduction of the unit cell size, a weakened hyperfine magnetic field, a disappearance of the Morin transition, an increase of magnetization at low temperatures, a shift in the position of IR bands to higher wavenumbers, and a lower intensity of absorption bands in the UV-Vis-NIR spectra. The calcination of Fe-Ga oxyhydroxides at 1000 degrees C resulted in the formation of a rhombohedral alpha-Fe-2 xGaxO3 phase for x = 0 and 0.4. An orthorhombic GaFeO3 phase with Fe3+ cations located in 3 different octahedral sites was obtained by the calcination at 1000 degrees C of mixed Fe-Ga oxyhydroxide with the Fe:Ga ratio of 1:1. A monoclinic phase b-Fe-2 xGaxO3 (x = 1.6 and 2) was obtained by the calcination at 1000 degrees C of Fe-Ga oxyhydroxides with 80 and 100 mol% Ga. The monoclinic beta-Ga1.6Fe0.4O3 showed two strong luminescence peaks in the blue region of the PL spectrum. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Synthesis and microstructural properties of mixed iron-gallium oxides
VL  - 634
SP  - 130
EP  - 141
DO  - 10.1016/j.jallcom.2015.02.065
ER  - 

@article{
author = "Krehula, Stjepko and Ristić, Mira and Kubuki, Shiro and Iida, Yusuke and Perović, Marija M. and Fabian, Martin and Musić, Svetozar",
year = "2015",
abstract = "Various mixed Fe-Ga oxides were prepared by the calcination of mixed Fe-Ga oxyhydroxide precursors (alpha-Fe1 xGaxOOH solid solutions, 0 LT = x LT = 1) at 500 or 1000 degrees C. Isostructural corundum-type oxides alpha-Fe2O3 and alpha-Ga2O3, as well as their solid solutions alpha-Fe-2 xGaxO3 in the entire concentration range (x = 0, 0.4, 1, 1.6 and 2) were prepared by calcination at 500 degrees C. An increase in the Ga content in alpha-Fe2 xGaxO3 resulted in a reduction of the unit cell size, a weakened hyperfine magnetic field, a disappearance of the Morin transition, an increase of magnetization at low temperatures, a shift in the position of IR bands to higher wavenumbers, and a lower intensity of absorption bands in the UV-Vis-NIR spectra. The calcination of Fe-Ga oxyhydroxides at 1000 degrees C resulted in the formation of a rhombohedral alpha-Fe-2 xGaxO3 phase for x = 0 and 0.4. An orthorhombic GaFeO3 phase with Fe3+ cations located in 3 different octahedral sites was obtained by the calcination at 1000 degrees C of mixed Fe-Ga oxyhydroxide with the Fe:Ga ratio of 1:1. A monoclinic phase b-Fe-2 xGaxO3 (x = 1.6 and 2) was obtained by the calcination at 1000 degrees C of Fe-Ga oxyhydroxides with 80 and 100 mol% Ga. The monoclinic beta-Ga1.6Fe0.4O3 showed two strong luminescence peaks in the blue region of the PL spectrum. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Synthesis and microstructural properties of mixed iron-gallium oxides",
volume = "634",
pages = "130-141",
doi = "10.1016/j.jallcom.2015.02.065"
}

Krehula, S., Ristić, M., Kubuki, S., Iida, Y., Perović, M. M., Fabian, M.,& Musić, S.. (2015). Synthesis and microstructural properties of mixed iron-gallium oxides. in Journal of Alloys and Compounds, 634, 130-141.
https://doi.org/10.1016/j.jallcom.2015.02.065

Krehula S, Ristić M, Kubuki S, Iida Y, Perović MM, Fabian M, Musić S. Synthesis and microstructural properties of mixed iron-gallium oxides. in Journal of Alloys and Compounds. 2015;634:130-141.
doi:10.1016/j.jallcom.2015.02.065 .

Krehula, Stjepko, Ristić, Mira, Kubuki, Shiro, Iida, Yusuke, Perović, Marija M., Fabian, Martin, Musić, Svetozar, "Synthesis and microstructural properties of mixed iron-gallium oxides" in Journal of Alloys and Compounds, 634 (2015):130-141,
https://doi.org/10.1016/j.jallcom.2015.02.065 . .