Emergent multiferroism with magnetodielectric coupling in EuTiO3 created by a negative pressure control of strong spin-phonon coupling.
Authors
Zhao, Run
Wu, Hua
Shen, Shipeng
Wang, Le
Sun, Young
Gao, Ju
Chen, Li
Publication Date
2022-05-02Journal Title
Nat Commun
ISSN
2041-1723
Publisher
Nature Publishing Group UK
Volume
13
Issue
1
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Zhao, R., Yang, C., Wang, H., Jiang, K., Wu, H., Shen, S., Wang, L., et al. (2022). Emergent multiferroism with magnetodielectric coupling in EuTiO3 created by a negative pressure control of strong spin-phonon coupling.. Nat Commun, 13 (1) https://doi.org/10.1038/s41467-022-30074-4
Abstract
Negative pressure has emerged as a powerful tool to tailor the physical properties of functional materials. However, a negative pressure control of spin-phonon coupling for engineering magnetism and multiferroicity has not been explored to date. Here, using uniform three-dimensional strain-induced negative pressure in nanocomposite films of (EuTiO3)0.5:(MgO)0.5, we demonstrate an emergent multiferroicity with magnetodielectric coupling in EuTiO3, matching exactly with density functional theory calculations. Density functional theory calculations are further used to explore the underlying physics of antiferromagnetic-paraelectric to ferromagnetic-ferroelectric phase transitions, the spin-phonon coupling, and its correlation with negative pressures. The observation of magnetodielectric coupling in the EuTiO3 reveals that an enhanced spin-phonon coupling originates from a negative pressure induced by uniform three-dimensional strain. Our work provides a route to creating multiferroicity and magnetoelectric coupling in single-phase oxides using a negative pressure approach.
Keywords
Article, /639/301/119/996, /639/766/119/996, /639/766/119/997, /120, /128, /147/137, /145, /119, /147/143, article
Identifiers
s41467-022-30074-4, 30074
External DOI: https://doi.org/10.1038/s41467-022-30074-4
This record's URL: https://www.repository.cam.ac.uk/handle/1810/336691
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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