INVESTIGADORES
CABRERA Alejandra Fabiana
artículos
Título:
Magnetic and structural study of Fe doped tin dioxide
Autor/es:
V. BILOVOL, A. M. MUDARRA NAVARRO, C. E. RODRÍGUEZ TORRES, F. H. SÁNCHEZ AND A. F. CABRERA
Revista:
PHYSICA B - CONDENSED MATTER
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2009 vol. 404 p. 2834 - 2837
ISSN:
0921-4526
Resumen:
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.2 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.
