Field-induced incommensurate-to-commensurate phase transition in the magnetoelectric hexaferrite Ba0.5Sr1.5Zn 2(Fe1-xAlx)12O22

Hak Bong Lee, Young Sang Song, Jaiho Chung, Sae Hwan Chun, Yi Sheng Chai, Kee Hoon Kim, M. Reehuis, K. Proke, S. Mat'A

Research output: Contribution to journalArticle

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Abstract

Using neutron diffraction, we investigated the spin structures of magnetoelectric hexaferrite, Ba0.5Sr1.5Zn 2(Fe1-xAlx)12O22 (x=0.08) under a magnetic field (Hc). When the crystal was cooled in a zero field, longitudinal spin cones were observed at low temperatures. These incommensurate phases, however, were replaced by the commensurate phase [k1=(0,0,32) ] when the ferroelectricity was induced by an external field perpendicular to the c axis. Magnetic structure refinement confirms that this commensurate order is compatible with the spin-current polarization. We argue that planar magnetic anisotropy plays an important role in determining the magnetic structure that is responsible for its magnetoelectricity.

Original languageEnglish
Article number144425
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number14
DOIs
Publication statusPublished - 2011 Apr 26

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Magnetic structure
Phase transitions
Ferroelectricity
Magnetic anisotropy
Neutron diffraction
Cones
ferroelectricity
Polarization
Magnetic fields
Crystals
neutron diffraction
cones
anisotropy
polarization
magnetic fields
Temperature
crystals

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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Field-induced incommensurate-to-commensurate phase transition in the magnetoelectric hexaferrite Ba0.5Sr1.5Zn 2(Fe1-xAlx)12O22 . / Lee, Hak Bong; Song, Young Sang; Chung, Jaiho; Chun, Sae Hwan; Chai, Yi Sheng; Kim, Kee Hoon; Reehuis, M.; Proke, K.; Mat'A, S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 83, No. 14, 144425, 26.04.2011.

Research output: Contribution to journalArticle

Lee, Hak Bong ; Song, Young Sang ; Chung, Jaiho ; Chun, Sae Hwan ; Chai, Yi Sheng ; Kim, Kee Hoon ; Reehuis, M. ; Proke, K. ; Mat'A, S. / Field-induced incommensurate-to-commensurate phase transition in the magnetoelectric hexaferrite Ba0.5Sr1.5Zn 2(Fe1-xAlx)12O22 In: Physical Review B - Condensed Matter and Materials Physics. 2011 ; Vol. 83, No. 14.
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AU - Song, Young Sang

AU - Chung, Jaiho

AU - Chun, Sae Hwan

AU - Chai, Yi Sheng

AU - Kim, Kee Hoon

AU - Reehuis, M.

AU - Proke, K.

AU - Mat'A, S.

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