EPR Study of LaNi1-xFexO3

R. D. SÁNCHEZ; R. E. CARBONIO; M. T. CAUSA

ELSEVIER SCIENCE BV

Año: 1995 vol. 140 p. 2147 - 2147

p style="TEXT-ALIGN: justify; LINE-HEIGHT: 200%; MARGIN: 0cm 0cm 0pt; TEXT-AUTOSPACE: ; mso-layout-grid-align: none" class="MsoNormal">LaNi(1-x)FexO3 is metallic for x < 0.3 and an antiferromagnetic insulator for x = 1. As a consequence, the EPR spectrum undergoes important changes as a function of x. The high-temperature linewidth is independent of T only for x > 0.7. In the other cases the linewidth is a linear function of T with an x-dependent slope. Relaxation mechanisms are discussed.