title: Concurrent transition of ferroelectric and magnetic ordering near room temperature.
abstract: 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 Néel 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.
authors: Department of Physics, POSTECH, Pohang, 790-784, Republic of Korea.
authors: Kyung-Tae
authors: KT
authors: Ko
authors: Min Hwa
authors: MH
authors: Jung
authors: Qing
authors: Q
authors: He
authors: Jin Hong
authors: JH
authors: Lee
authors: Chang Su
authors: CS
authors: Woo
authors: Kanghyun
authors: K
authors: Chu
authors: Jan
authors: J
authors: Seidel
authors: Byung-Gu
authors: BG
authors: Jeon
authors: Yoon Seok
authors: YS
authors: Oh
authors: Kee Hoon
authors: KH
authors: Kim
authors: Wen-I
authors: WI
authors: Liang
authors: Hsiang-Jung
authors: HJ
authors: Chen
authors: Ying-Hao
authors: YH
authors: Chu
authors: Yoon Hee
authors: YH
authors: Jeong
authors: Ramamoorthy
authors: R
authors: Ramesh
authors: Jae-Hoon
authors: JH
authors: Park
authors: Chan-Ho
authors: CH
authors: Yang
mesh_terms: D004560:Electricity; D005290:Ferric Compounds / Q000737:chemistry*; D008280:Magnetics; D013696:Temperature
chemical_list: D005290:Ferric Compounds