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 journalArticle

38 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 languageEnglish
Article number180419
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number18
DOIs
Publication statusPublished - Nov 20 2009
Externally publishedYes

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Ferroelectric materials
Magnetic fields
magnetic fields
Neutron diffraction
Phase diagrams
neutron diffraction
Hysteresis
Phase transitions
hysteresis
phase diagrams
Modulation
Single crystals
modulation
Temperature
single crystals
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Two distinct ferroelectric phases in the multiferroic y -type hexaferrite Ba2 Mg2 Fe12 O22. / Sagayama, Hajime; Taniguchi, Kouji; Abe, Nobuyuki; Arima, Taka Hisa; Nishikawa, Yusaku; Yano, Shin Ichiro; Kousaka, Yusuke; Akimitsu, Jun; Matsuura, Masato; Hirota, Kazuma.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 18, 180419, 20.11.2009.

Research output: Contribution to journalArticle

Sagayama, H, Taniguchi, K, Abe, N, Arima, TH, Nishikawa, Y, Yano, SI, Kousaka, Y, Akimitsu, J, Matsuura, M & Hirota, K 2009, 'Two distinct ferroelectric phases in the multiferroic y -type hexaferrite Ba2 Mg2 Fe12 O22', Physical Review B - Condensed Matter and Materials Physics, vol. 80, no. 18, 180419. https://doi.org/10.1103/PhysRevB.80.180419
Sagayama, Hajime ; Taniguchi, Kouji ; Abe, Nobuyuki ; Arima, Taka Hisa ; Nishikawa, Yusaku ; Yano, Shin Ichiro ; Kousaka, Yusuke ; Akimitsu, Jun ; Matsuura, Masato ; Hirota, Kazuma. / Two distinct ferroelectric phases in the multiferroic y -type hexaferrite Ba2 Mg2 Fe12 O22. In: Physical Review B - Condensed Matter and Materials Physics. 2009 ; Vol. 80, No. 18.
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