SPIN WAVES IN REENTRANT SPIN GLASS Fe0.9Ti0.55Mg1.55O4

G. Gavoille; J. Hubsch

doi:doi:10.1051/jphyscol:19888532

Numéro		J. Phys. Colloques Volume 49, Numéro C8, Décembre 1988 Proceedings of the International Conference on Magnetism


Page(s)		C8-1159 - C8-1160
DOI		https://doi.org/10.1051/jphyscol:19888532

Proceedings of the International Conference on Magnetism

J. Phys. Colloques 49 (1988) C8-1159-C8-1160
DOI: 10.1051/jphyscol:19888532

SPIN WAVES IN REENTRANT SPIN GLASS Fe_0.9Ti_0.55Mg_1.55O₄

G. Gavoille et J. Hubsch

Laboratoire d'Electricité et d'Automatique et Laboratoire de Minéralogie et Cristallographie, Université de Nancy I, B.P. 239, 54506 Vandoeuvre les Nancy Cedex, France

Abstract
Strong thermoremanent magnetization appears at below 25 K in low magnetic fields. At any temperature below 57 K the high field magnetization satisfies the spin wave theory but the magnetization does not follow the T^3/2 law. That suggests a mixed-phase which appears before the strong irreversibility region.