Abstract
La2NiMnO6 is a unique compound of multiferroics that exhibits two magnetic transitions of Curie points TC1 and TC2 below room temperature on a partial conversion of charge carriers, Ni2+ → Ni3+ and Mn4+→ Mn3+, stabilized with O2- vacancies in distorted octagons in a double perovskite of a spin cluster (glass), wherein the spins freezing at a critical Tg point at lower temperatures. The peak temperature and irreversibility temperature shifted to the lower temperature. The dc magnetization M (T) measurements indicate random ferromagnetic and antiferromagnetic interactions and multiple magnetic transitions. The critical slowing properties signify the spin-glass nature proved by the thermomagnetic relaxation measure.
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