| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Magnetoelectric memory effect in the Y-type hexaferrite BaSrZnMgFe12O22 |
| Fen Wang(王芬)1,2, Shi-Peng Shen(申世鹏)2, Young Sun(孙阳)2 |
1 Chinese Aeronautical Establishment, Beijing 100012, China;
2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract We report on the magnetic and magnetoelectric properties of the Y-type hexaferrite BaSrZnMgFe12O22, which undergoes transitions from a collinear ferrimagnetic phase to a proper screw phase at 310 K and to a longitudinal conical phase at 45 K. Magnetic and electric measurements revealed that the magnetic structure with spiral spin order can be modified by applying a magnetic field, resulting in magnetically controllable electric polarization.It was observed that BaSrZnMgFe12O22 exhibits an anomalous magnetoelectric memory effect: the ferroelectric state can be partially recovered from the paraelectric phase with collinear spin structure by reducing magnetic field at 20 K. We ascribe this memory effect to the pinning of multiferroic domain walls, where spin chirality and structure are preserved even in the nonpolar collinear spin state.
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Received: 27 April 2016
Revised: 14 June 2016
Accepted manuscript online:
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PACS:
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75.85.+t
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(Magnetoelectric effects, multiferroics)
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77.80.-e
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(Ferroelectricity and antiferroelectricity)
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75.50.-y
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(Studies of specific magnetic materials)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11534015 and 51371193). |
Corresponding Authors:
Young Sun
E-mail: youngsun@iphy.ac.cn
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Cite this article:
Fen Wang(王芬), Shi-Peng Shen(申世鹏), Young Sun(孙阳) Magnetoelectric memory effect in the Y-type hexaferrite BaSrZnMgFe12O22 2016 Chin. Phys. B 25 087503
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