Heliconical magnetic order and field-induced multiferroicity of the Co 2Y-type hexaferrite Ba 0.3Sr 1.7Co 2Fe 12O 22

Hak Bong Lee, Sae Hwan Chun, Kwang Woo Shin, Byung Gu Jeon, Yi Sheng Chai, Kee Hoon Kim, Jürg Schefer, Hun Chang, Sae Na Yun, Tae Young Joung, Jaiho Chung

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Abstract

Using magnetoelectric measurements and neutron diffraction, we investigated multiferroic properties of Co 2Y hexaferrite Ba 0.3Sr 1.7Co 2Fe 12O 22 in zero and finite magnetic field (H⊥c). Upon zero-field cooling, a longitudinal heliconical magnetic structure was observed below 280 K, which involves incommensurate planar helical ordering. When the magnetic field was applied perpendicular to its c axis, electric polarization was observed and the incommensurate ordering was replaced by a commensurate one as commonly observed in other hexaferrites. Electric polarization remained at its maximum during field reversal at 10 K, which indicates that magnetic anisotropy within the basal planes stabilizes the field-induced electric polarization.

Original languageEnglish
Article number094435
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number9
DOIs
Publication statusPublished - 2012 Sep 27

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Polarization
polarization
Magnetic fields
Magnetic anisotropy
Magnetic structure
Neutron diffraction
magnetic fields
neutron diffraction
Cooling
cooling
anisotropy
diffraction

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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Heliconical magnetic order and field-induced multiferroicity of the Co 2Y-type hexaferrite Ba 0.3Sr 1.7Co 2Fe 12O 22 . / Lee, Hak Bong; Chun, Sae Hwan; Shin, Kwang Woo; Jeon, Byung Gu; Chai, Yi Sheng; Kim, Kee Hoon; Schefer, Jürg; Chang, Hun; Yun, Sae Na; Joung, Tae Young; Chung, Jaiho.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 86, No. 9, 094435, 27.09.2012.

Research output: Contribution to journalArticle

Lee, Hak Bong ; Chun, Sae Hwan ; Shin, Kwang Woo ; Jeon, Byung Gu ; Chai, Yi Sheng ; Kim, Kee Hoon ; Schefer, Jürg ; Chang, Hun ; Yun, Sae Na ; Joung, Tae Young ; Chung, Jaiho. / Heliconical magnetic order and field-induced multiferroicity of the Co 2Y-type hexaferrite Ba 0.3Sr 1.7Co 2Fe 12O 22 In: Physical Review B - Condensed Matter and Materials Physics. 2012 ; Vol. 86, No. 9.
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AU - Shin, Kwang Woo

AU - Jeon, Byung Gu

AU - Chai, Yi Sheng

AU - Kim, Kee Hoon

AU - Schefer, Jürg

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AU - Yun, Sae Na

AU - Joung, Tae Young

AU - Chung, Jaiho

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