Effect of thermal treatment in vacuum on Fe-doped SnO2 powders |
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| Authors: | V. Bilovol,A.M. Mudarra Navarro,C.E. Rodrí guez Torres,A.F. Cabrera |
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| Affiliation: | 1. Laboratorio de Sólidos Amorfos, INTECIN, Facultad de Ingeniería, Universidad de Buenos Aires, Paseo Colón 850, C1063ACV Buenos Aires, Argentina;2. Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, IFLP-CCT La Plata, CONICET, Argentina |
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| Abstract: | ![]()
A sample of 10 at% Fe-doped SnO2 powder was prepared by mechanical alloying and then thermally treated at 773 K in vacuum. The fit of the diffraction patterns and X-ray absorption spectroscopy measurements revealed that the as milled sample was pure doped rutile. Fe dissolved into SnO2 was found in Fe2+/Fe3+ ionic valence with mainly paramagnetic behavior. After the thermal treatment all techniques indicate the formation of the ternary Sn0.36Fe2.64O4 spinel phase, which is responsible for the observed ferromagnetism. |
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| Keywords: | Semiconductors oxides Magnetic properties Nanoparticles |
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