Metamagnetic behaviour and effect of field cooling on sharp magnetization jumps in multiferroic Y 2 CoMnO 6

J. Krishna Murthy*, K. D. Chandrasekhar, H. C. Wu, H. D. Yang, Jiunn-Yuan Lin, A. Venimadhav

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

We present sharp magnetization jumps and field-induced irreversibility in magnetization in multiferroic Y 2 CoMnO 6 . The appearance of magnetic relaxation and field sweep rate dependence of magnetization jumps resembles the martensite-like scenario and suggests the coexistence of E∗-type antiferromagnetic and ferromagnetic phases at low temperatures. In Y 2 CoMnO 6 , the critical field required for the sharp jump can be increased or decreased depending on the magnitude and direction of the cooling field; this is remarkably different from manganites or other metamagnetic materials where the critical field increases irrespective of the direction of the applied field cooling. The cooling field dependence on the sharp magnetization jumps has been described by considering exchange pinning mechanism at the interface, like in the exchange bias model.

Original languageEnglish
Article number27013
JournalEPL
Volume108
Issue number2
DOIs
StatePublished - 1 Oct 2014

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