Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroics
Abstract For the development of spintronic devices, the control of magnetization by a low electric field is necessary. The microscopic origin of manipulating spins relies on the control of orbital magnetic moments (m orb) by strain; this is essential for the high performance magnetoelectric (ME) eff...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-01-01
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| Series: | NPG Asia Materials |
| Online Access: | https://doi.org/10.1038/s41427-023-00524-6 |
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| author | Jun Okabayashi Takamasa Usami Amran Mahfudh Yatmeidhy Yuichi Murakami Yu Shiratsuchi Ryoichi Nakatani Yoshihiro Gohda Kohei Hamaya |
| author_facet | Jun Okabayashi Takamasa Usami Amran Mahfudh Yatmeidhy Yuichi Murakami Yu Shiratsuchi Ryoichi Nakatani Yoshihiro Gohda Kohei Hamaya |
| author_sort | Jun Okabayashi |
| collection | DOAJ |
| description | Abstract For the development of spintronic devices, the control of magnetization by a low electric field is necessary. The microscopic origin of manipulating spins relies on the control of orbital magnetic moments (m orb) by strain; this is essential for the high performance magnetoelectric (ME) effect. Herein, electric-field induced X-ray magnetic circular dichroism (XMCD) is used to determine the changes in m orb by piezoelectric strain and clarify the relationship between the strain and m orb in an interfacial multiferroics system with a significant ME effect; the system consists of the Heusler alloy Co2FeSi on a ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3 substrate. Element-specific investigations of the orbital states by operando XMCD and the local environment via extended X-ray absorption fine structure (EXAFS) analysis show that the modulation of only the Fe sites in Co2FeSi primarily contributes to the giant ME effect. The density functional theory calculations corroborate this finding, and the growth of the high index (422) plane in Co2FeSi results in a giant ME effect. These findings elucidate the element-specific orbital control using reversible strain, called the ‘orbital elastic effect,’ and can provide guidelines for material designs with a giant ME effect. |
| format | Article |
| id | doaj-art-3c3ef83f7d2843faad8ee83808e06a42 |
| institution | Kabale University |
| issn | 1884-4057 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | NPG Asia Materials |
| spelling | doaj-art-3c3ef83f7d2843faad8ee83808e06a422025-01-19T12:28:26ZengNature PortfolioNPG Asia Materials1884-40572024-01-0116111010.1038/s41427-023-00524-6Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroicsJun Okabayashi0Takamasa Usami1Amran Mahfudh Yatmeidhy2Yuichi Murakami3Yu Shiratsuchi4Ryoichi Nakatani5Yoshihiro Gohda6Kohei Hamaya7Research Center for Spectrochemistry, The University of Tokyo, Bunkyo-kuCenter for Spintronics Research Network, Graduate School of Engineering Science, Osaka UniversityDepartment of Materials Science and Engineering, Tokyo Institute of TechnologyDepartment of Systems Innovation, Graduate School of Engineering Science, Osaka UniversityCenter for Spintronics Research Network, Graduate School of Engineering Science, Osaka UniversityCenter for Spintronics Research Network, Graduate School of Engineering Science, Osaka UniversityCenter for Spintronics Research Network, Graduate School of Engineering Science, Osaka UniversityCenter for Spintronics Research Network, Graduate School of Engineering Science, Osaka UniversityAbstract For the development of spintronic devices, the control of magnetization by a low electric field is necessary. The microscopic origin of manipulating spins relies on the control of orbital magnetic moments (m orb) by strain; this is essential for the high performance magnetoelectric (ME) effect. Herein, electric-field induced X-ray magnetic circular dichroism (XMCD) is used to determine the changes in m orb by piezoelectric strain and clarify the relationship between the strain and m orb in an interfacial multiferroics system with a significant ME effect; the system consists of the Heusler alloy Co2FeSi on a ferroelectric Pb(Mg1/3Nb2/3)O3-PbTiO3 substrate. Element-specific investigations of the orbital states by operando XMCD and the local environment via extended X-ray absorption fine structure (EXAFS) analysis show that the modulation of only the Fe sites in Co2FeSi primarily contributes to the giant ME effect. The density functional theory calculations corroborate this finding, and the growth of the high index (422) plane in Co2FeSi results in a giant ME effect. These findings elucidate the element-specific orbital control using reversible strain, called the ‘orbital elastic effect,’ and can provide guidelines for material designs with a giant ME effect.https://doi.org/10.1038/s41427-023-00524-6 |
| spellingShingle | Jun Okabayashi Takamasa Usami Amran Mahfudh Yatmeidhy Yuichi Murakami Yu Shiratsuchi Ryoichi Nakatani Yoshihiro Gohda Kohei Hamaya Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroics NPG Asia Materials |
| title | Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroics |
| title_full | Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroics |
| title_fullStr | Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroics |
| title_full_unstemmed | Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroics |
| title_short | Strain-induced specific orbital control in a Heusler alloy-based interfacial multiferroics |
| title_sort | strain induced specific orbital control in a heusler alloy based interfacial multiferroics |
| url | https://doi.org/10.1038/s41427-023-00524-6 |
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