Antisite disorder-induced exchange bias effect in multiferroic Y2CoMnO6

Harikrishnan S. Nair, Tapan Chatterji, André M. Strydom

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

Exchange bias effect in the ferromagnetic double perovskite compound Y2CoMnO6, which is also a multiferroic, is reported. The exchange bias, observed below 8 K, is explained as arising due to the interface effect between the ferromagnetic and antiferromagnetic clusters created by antisite disorder in this material. Below 8 K, prominent ferromagnetic hysteresis with metamagnetic "steps" and significant coercive field, Hc ≈ 10 kOe are observed in this compound which has a Tc ≈ 75 K. A model based on growth of ferromagnetic domains overcoming the elastic energy of structurally pinned magnetic interfaces, which closely resembles martensitic-like transitions, is adapted to explain the observed effects. The role of antisite disorder in creating the domain structure leading to exchange bias effect is highlighted in the present work.

Original languageEnglish
Article number022407
JournalApplied Physics Letters
Volume106
Issue number2
DOIs
Publication statusPublished - 12 Jan 2015

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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