The influence of the antiferromagnetic boundary on the magnetic property of La2 NiMnO6

Abstract

Polycrystalline La2 NiMnO6 compounds were fabricated at different temperatures and their magnetic properties were investigated. Although the antiferromagnetic antisite disorder degree changes a little, the antiferromagnetic coupling intensity increases with increasing synthesized temperature. When La2 NiMnO6 sample was cooled at 100 Oe from room temperature to 10 K, exchange bias was observed. Our results confirm that the exchange bias should originate from the coupling between the ferromagnetic La2 NiMnO6 and antiferromagnetic antiphase boundaries. © 2009 American Institute of Physics.