Journal article
Room-temperature type-II multiferroic phase induced by pressure in cupric oxide
- Abstract:
- According to previous theoretical work, the binary oxide CuO can become a room temperature multiferroic via tuning of the superexchange interactions by application of pressure. Thus far, however, there has been no experimental evidence for the predicted room-temperature multiferroicity. Here, we show by neutron diffraction that the multiferroic phase in CuO reaches 295 K with the application of 18.5 GPa pressure. We also develop a spin Hamiltonian based on density functional theory and employing superexchange theory for the magnetic interactions, which can reproduce the experimental results. The present study provides a stimulus to develop room-temperature multiferroic materials by alternative methods based on existing low temperature compounds, such as epitaxial strain, for tunable multifunctional devices and memory applications.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
-
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(Preview, Accepted manuscript, pdf, 3.7MB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevLett.129.217601
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 129
- Article number:
- 217601
- Publication date:
- 2022-11-15
- Acceptance date:
- 2022-10-07
- DOI:
- EISSN:
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1079-7114
- ISSN:
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0031-9007
- Language:
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English
- Keywords:
- Pubs id:
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1282088
- Local pid:
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pubs:1282088
- Deposit date:
-
2022-10-10
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2022
- Rights statement:
- © 2022 American Physical Society
- Notes:
- This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: https://doi.org/10.1103/PhysRevLett.129.217601
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