INVESTIGADORES
RODRIGUEZ TORRES Claudia Elena
artículos
Título:
Magnetic and structure study of Fe doped tin dioxide.
Autor/es:
V. BILOVOL; A. M. MUDARRA NAVARRO; C.E. RODRÍGUEZ TORRES; F. H. SÁNCHEZ; 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 rutiles tructure 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 100K a field shift of hysteresis loops is evident indicating magnetic coupling between ferromagnetic/antiferromagnetic phases.
