Realization of giant magnetoelectricity in helimagnets

Sae Hwan Chun; Yi Sheng Chai; Yoon Seok Oh; Deepshikha Jaiswal-Nagar; So Young Haam; Ingyu Kim; Bumsung Lee; Dong Hak Nam; Kyung Tae Ko; Jae Hoon Park; Jae Ho Chung; Kee Hoon Kim

doi:10.1103/PhysRevLett.104.037204

Realization of giant magnetoelectricity in helimagnets

Sae Hwan Chun, Yi Sheng Chai, Yoon Seok Oh, Deepshikha Jaiswal-Nagar, So Young Haam, Ingyu Kim, Bumsung Lee, Dong Hak Nam, Kyung Tae Ko, Jae Hoon Park, Jae Ho Chung, Kee Hoon Kim

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

172 Citations (Scopus)

Abstract

We show that low field magnetoelectric (ME) properties of helimagnets Ba0.5Sr1.5Zn2(Fe1-xAlx)12O22 can be efficiently tailored by the Al-substitution level. As x increases, the critical magnetic field for switching electric polarization is systematically reduced from ∼1T down to ∼1mT, and the ME susceptibility is greatly enhanced to reach a giant value of 2.0×104ps/m at an optimum x=0.08. We find that control of the nontrivial orbital moment in the octahedral Fe sites through the Al substitution is crucial for fine-tuning the magnetic anisotropy and obtaining the conspicuously improved ME characteristics.

Original language	English
Article number	037204
Journal	Physical review letters
Volume	104
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.104.037204
Publication status	Published - 2010 Jan 21

Bibliographical note

Funding Information:
The following funding is acknowledged: Knut och Alice Wallenbergs Stiftelse (grant No. 2014.075); Vetenskapsrådet (grant No. 2014-4732); Stiftelsen Olle Engkvist Byggmästare (award No. 1041513); H2020 Marie Skłodowska-Curie Actions (grant No. 637295). The FemtoMAX beamline was funded by the Knut och Alice Wallenbergs Stiftelse and 12 Swedish research universities (grant No. 2010.0098).

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.104.037204

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title = "Realization of giant magnetoelectricity in helimagnets",

abstract = "We show that low field magnetoelectric (ME) properties of helimagnets Ba0.5Sr1.5Zn2(Fe1-xAlx)12O22 can be efficiently tailored by the Al-substitution level. As x increases, the critical magnetic field for switching electric polarization is systematically reduced from ∼1T down to ∼1mT, and the ME susceptibility is greatly enhanced to reach a giant value of 2.0×104ps/m at an optimum x=0.08. We find that control of the nontrivial orbital moment in the octahedral Fe sites through the Al substitution is crucial for fine-tuning the magnetic anisotropy and obtaining the conspicuously improved ME characteristics.",

author = "Chun, {Sae Hwan} and Chai, {Yi Sheng} and Oh, {Yoon Seok} and Deepshikha Jaiswal-Nagar and Haam, {So Young} and Ingyu Kim and Bumsung Lee and Nam, {Dong Hak} and Ko, {Kyung Tae} and Park, {Jae Hoon} and Chung, {Jae Ho} and Kim, {Kee Hoon}",

note = "Funding Information: The following funding is acknowledged: Knut och Alice Wallenbergs Stiftelse (grant No. 2014.075); Vetenskapsr{\aa}det (grant No. 2014-4732); Stiftelsen Olle Engkvist Byggm{\"a}stare (award No. 1041513); H2020 Marie Sk{\l}odowska-Curie Actions (grant No. 637295). The FemtoMAX beamline was funded by the Knut och Alice Wallenbergs Stiftelse and 12 Swedish research universities (grant No. 2010.0098).",

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doi = "10.1103/PhysRevLett.104.037204",

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AU - Chun, Sae Hwan

AU - Chai, Yi Sheng

AU - Oh, Yoon Seok

AU - Jaiswal-Nagar, Deepshikha

AU - Haam, So Young

AU - Kim, Ingyu

AU - Lee, Bumsung

AU - Nam, Dong Hak

AU - Ko, Kyung Tae

AU - Park, Jae Hoon

AU - Chung, Jae Ho

AU - Kim, Kee Hoon

N1 - Funding Information: The following funding is acknowledged: Knut och Alice Wallenbergs Stiftelse (grant No. 2014.075); Vetenskapsrådet (grant No. 2014-4732); Stiftelsen Olle Engkvist Byggmästare (award No. 1041513); H2020 Marie Skłodowska-Curie Actions (grant No. 637295). The FemtoMAX beamline was funded by the Knut och Alice Wallenbergs Stiftelse and 12 Swedish research universities (grant No. 2010.0098).

PY - 2010/1/21

Y1 - 2010/1/21

N2 - We show that low field magnetoelectric (ME) properties of helimagnets Ba0.5Sr1.5Zn2(Fe1-xAlx)12O22 can be efficiently tailored by the Al-substitution level. As x increases, the critical magnetic field for switching electric polarization is systematically reduced from ∼1T down to ∼1mT, and the ME susceptibility is greatly enhanced to reach a giant value of 2.0×104ps/m at an optimum x=0.08. We find that control of the nontrivial orbital moment in the octahedral Fe sites through the Al substitution is crucial for fine-tuning the magnetic anisotropy and obtaining the conspicuously improved ME characteristics.

AB - We show that low field magnetoelectric (ME) properties of helimagnets Ba0.5Sr1.5Zn2(Fe1-xAlx)12O22 can be efficiently tailored by the Al-substitution level. As x increases, the critical magnetic field for switching electric polarization is systematically reduced from ∼1T down to ∼1mT, and the ME susceptibility is greatly enhanced to reach a giant value of 2.0×104ps/m at an optimum x=0.08. We find that control of the nontrivial orbital moment in the octahedral Fe sites through the Al substitution is crucial for fine-tuning the magnetic anisotropy and obtaining the conspicuously improved ME characteristics.

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Realization of giant magnetoelectricity in helimagnets

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