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Oh, Yoon Seok
Laboratory for Strong Correlation in Quantum Materials
Research Interests
  • Multiferroic
  • Ferroelectric
  • Quantum Magnetism

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Concurrent transition of ferroelectric and magnetic ordering near room temperature

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Title
Concurrent transition of ferroelectric and magnetic ordering near room temperature
Author
Ko, Kyung-TaeJung, Min HwaHe, QingLee, Jin HongWoo, Chang SuChu, KanghyunSeidel, JanJeon, Byung-GuOh, Yoon SeokKim, Kee HoonLian, Wen-IChen, Hsiang-JungChu, Yng-HaoJeong, Yoon HeeRamesh, RamamoorthyPark, Jae-HoonYang, Chan-Ho
Keywords
bismuth ferrite; ferric oxide; unclassified drug; ferric ion
Issue Date
2011-11
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.2, no., pp.567 -
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 BiFeO3 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. © 2011 Macmillan Publishers Limited. All rights reserved.
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DOI
10.1038/ncomms1576
ISSN
2041-1723
Appears in Collections:
PHY_Journal Papers
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