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Control of the polarization flop direction by a tilted magnetic field in multiferroic TbMnO 3

Control of the polarization flop direction by a tilted magnetic field in multiferroic TbMnO 3 In spin-driven ferroelectrics, often referred to as magnetoelectric (ME) multiferroics, a domain wall separates two magnetic as well as ferroelectric domains. Therefore, it is expected that the control of such an ME domain wall could result in a large ME effect. Here, we show that the direction of a slanted magnetic field controls whether the electric polarization ( P ) rotates by + 90 or − 90 ° upon the P -flop transition in a prototypical spiral magnetic ferroelectric TbMnO 3 . This behavior is discussed in terms of the domain-wall energy of a spiral magnet in a slanted magnetic field. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Control of the polarization flop direction by a tilted magnetic field in multiferroic TbMnO 3

Abe, N; Taniguchi, K; Ohtani, S; Umetsu, H; Arima, T
Physical Review B , Volume 80 (2) – Jul 1, 2009
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Publisher
American Physical Society (APS)
Copyright
Copyright © 2009 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.80.020402
Publisher site
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Abstract

In spin-driven ferroelectrics, often referred to as magnetoelectric (ME) multiferroics, a domain wall separates two magnetic as well as ferroelectric domains. Therefore, it is expected that the control of such an ME domain wall could result in a large ME effect. Here, we show that the direction of a slanted magnetic field controls whether the electric polarization ( P ) rotates by + 90 or − 90 ° upon the P -flop transition in a prototypical spiral magnetic ferroelectric TbMnO 3 . This behavior is discussed in terms of the domain-wall energy of a spiral magnet in a slanted magnetic field.

Journal

Physical Review B – American Physical Society (APS)

Published: Jul 1, 2009

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