Theoretical study of magnetic properties of SrMn_1‐xFe_xO₃ perovskites

Abstract

Purpose -This paper aims to combine the results of magnetic measurements with high temperature series expansions to determine the magnetic phase diagram of SrMn 12 x Fe x O 3 0 # x # 1 perovskites materials. Design/methodology/approach -The authors have found antiferromagnetic ordering for lightly and heavily Fe-substituted material, while intermediate substitution leads to spin-glass behavior. Near the SrMn 0.5 Fe 0.5 O 3 composition these two types of ordering are found to coexist and affect one another. Findings -The spin glass behavior may be caused by competing ferromagnetic and antiferromagnetic interactions among Mn 4þ and observed Fe 3þ and Fe 5þ ions. Originality/value -The magnetic perovskites materials are several application in industrial applications (spintronics, magnetic random-access memory (MRAM), . . .).