標題: Concurrent transition of ferroelectric and magnetic ordering near room temperature
作者: Ko, Kyung-Tae
Jung, Min Hwa
He, Qing
Lee, Jin Hong
Woo, Chang Su
Chu, Kanghyun
Seidel, Jan
Jeon, Byung-Gu
Oh, Yoon Seok
Kim, Kee Hoon
Liang, Wen-I
Chen, Hsiang-Jung
Chu, Ying-Hao
Jeong, Yoon Hee
Ramesh, Ramamoorthy
Park, Jae-Hoon
Yang, Chan-Ho
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 1-十一月-2011
摘要: Strong spin-lattice coupling in condensed matter gives rise to intriguing physical phenomena such as colossal magnetoresistance and giant magnetoelectric effects. The phenomenological hallmark of such a strong spin-lattice coupling is the manifestation of a large anomaly in the crystal structure at the magnetic transition temperature. Here we report that the magnetic Neel temperature of the multiferroic compound BiFeO(3) is suppressed to around room temperature by heteroepitaxial misfit strain. Remarkably, the ferroelectric state undergoes a first-order transition to another ferroelectric state simultaneously with the magnetic transition temperature. Our findings provide a unique example of a concurrent magnetic and ferroelectric transition at the same temperature among proper ferroelectrics, taking a step toward room temperature magnetoelectric applications.
URI: http://dx.doi.org/10.1038/ncomms1576
http://hdl.handle.net/11536/14944
ISSN: 2041-1723
DOI: 10.1038/ncomms1576
期刊: NATURE COMMUNICATIONS
Volume: 2
Issue: 
結束頁: 
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