Two distinct ferroelectric phases in the multiferroic y -type hexaferrite Ba2 Mg2 Fe12 O22

Hajime Sagayama; Kouji Taniguchi; Nobuyuki Abe; Taka Hisa Arima; Yusaku Nishikawa; Shin Ichiro Yano; Yusuke Kousaka; Jun Akimitsu; Masato Matsuura; Kazuma Hirota

doi:10.1103/PhysRevB.80.180419

Two distinct ferroelectric phases in the multiferroic y -type hexaferrite Ba2 Mg2 Fe12 O22

Hajime Sagayama, Kouji Taniguchi, Nobuyuki Abe, Taka Hisa Arima, Yusaku Nishikawa, Shin Ichiro Yano, Yusuke Kousaka, Jun Akimitsu, Masato Matsuura, Kazuma Hirota

Research output: Contribution to journal › Article › peer-review

53 Citations (Scopus)

Abstract

The magnetic phase diagram of the Y -type hexaferrite Ba2 Mg2 Fe12 O22 has been studied using single-crystal neutron diffraction. The result indicates successive phase transitions where the magnetic modulation wave number changed discontinuously when a magnetic field is applied and the temperature is varied. For the low-temperature spin-driven ferroelectric state, we have found a sixfold structure with q= (001/2) in weak magnetic fields and a twofold structure with q= (003/2) in strong magnetic fields between which a first-order transition intervenes accompanied by a hysteresis.

Original language	English
Article number	180419
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	80
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.80.180419
Publication status	Published - Nov 20 2009
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.80.180419

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abstract = "The magnetic phase diagram of the Y -type hexaferrite Ba2 Mg2 Fe12 O22 has been studied using single-crystal neutron diffraction. The result indicates successive phase transitions where the magnetic modulation wave number changed discontinuously when a magnetic field is applied and the temperature is varied. For the low-temperature spin-driven ferroelectric state, we have found a sixfold structure with q= (001/2) in weak magnetic fields and a twofold structure with q= (003/2) in strong magnetic fields between which a first-order transition intervenes accompanied by a hysteresis.",

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T1 - Two distinct ferroelectric phases in the multiferroic y -type hexaferrite Ba2 Mg2 Fe12 O22

AU - Sagayama, Hajime

AU - Taniguchi, Kouji

AU - Abe, Nobuyuki

AU - Arima, Taka Hisa

AU - Nishikawa, Yusaku

AU - Yano, Shin Ichiro

AU - Kousaka, Yusuke

AU - Akimitsu, Jun

AU - Matsuura, Masato

AU - Hirota, Kazuma

PY - 2009/11/20

Y1 - 2009/11/20

N2 - The magnetic phase diagram of the Y -type hexaferrite Ba2 Mg2 Fe12 O22 has been studied using single-crystal neutron diffraction. The result indicates successive phase transitions where the magnetic modulation wave number changed discontinuously when a magnetic field is applied and the temperature is varied. For the low-temperature spin-driven ferroelectric state, we have found a sixfold structure with q= (001/2) in weak magnetic fields and a twofold structure with q= (003/2) in strong magnetic fields between which a first-order transition intervenes accompanied by a hysteresis.

AB - The magnetic phase diagram of the Y -type hexaferrite Ba2 Mg2 Fe12 O22 has been studied using single-crystal neutron diffraction. The result indicates successive phase transitions where the magnetic modulation wave number changed discontinuously when a magnetic field is applied and the temperature is varied. For the low-temperature spin-driven ferroelectric state, we have found a sixfold structure with q= (001/2) in weak magnetic fields and a twofold structure with q= (003/2) in strong magnetic fields between which a first-order transition intervenes accompanied by a hysteresis.

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Two distinct ferroelectric phases in the multiferroic y -type hexaferrite Ba2 Mg2 Fe12 O22

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