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

*此作品的通信作者

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27 引文 斯高帕斯(Scopus)

摘要

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.

原文English
文章編號27013
期刊EPL
108
發行號2
DOIs
出版狀態Published - 1 10月 2014

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