Magnetic and structural study of Fe doped tin dioxide |
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| Authors: | V. Bilovol, A.M. Mudarra Navarro, C.E. Rodrí guez Torres, F.H. S nchez,A.F. Cabrera |
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| Affiliation: | aDepartamento de Física, Facultad de Ciencias Exactas, UNLP-IFLP-CCT, La Plata-CONICET, C.C 67, 1900 La Plata, Argentina |
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| Abstract: | The structural and magnetic properties of Fe 10 at% doped SnO2 powders milled for different times have been investigated. XAS results demonstrate the dilution of Fe atoms in the rutile structure after 5 h of milling. Fe atoms have almost one oxygen vacancy near neighbour. At RT the sample presents the superposition of paramagnetic and ferromagnetic behaviours. When temperature decreases a progressive blocking process was observed. Below 100 K a field shift of hysteresis loops is evident indicating magnetic coupling between ferromagnetic/antiferromagnetic phases. |
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| Keywords: | Semiconductor oxides Magnetic properties XAS |
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