Journal article
Deterministic and robust room-temperature exchange coupling in monodomain multiferroic BiFeO3 heterostructures
- Abstract:
- Exploiting multiferroic BiFeO3 thin films in spintronic devices requires deterministic and robust control of both internal magnetoelectric coupling in BiFeO3, as well as exchange coupling of its antiferromagnetic order to a ferromagnetic overlayer. Previous reports utilized approaches based on multi-step ferroelectric switching with multiple ferroelectric domains. Because domain walls can be responsible for fatigue, contain localized charges intrinsically or via defects, and present problems for device reproducibility and scaling, an alternative approach using a monodomain magnetoelectric state with single-step switching is desirable. Here we demonstrate room temperature, deterministic and robust, exchange coupling between monodomain BiFeO3 films and Co overlayer that is intrinsic (i.e., not dependent on domain walls). Direct coupling between BiFeO3 antiferromagnetic order and Co magnetization is observed, with ~ 90° in-plane Co moment rotation upon single-step switching that is reproducible for hundreds of cycles. This has important consequences for practical, low power non-volatile magnetoelectric devices utilizing BiFeO3.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.5MB, Terms of use)
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- Publisher copy:
- 10.1038/s41467-017-01581-6
Authors
- Publisher:
- Springer Nature
- Journal:
- Nature Communications More from this journal
- Volume:
- 8
- Issue:
- 1
- Pages:
- 1583
- Publication date:
- 2017-11-17
- Acceptance date:
- 2017-09-27
- DOI:
- ISSN:
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2041-1723
- Pmid:
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29146896
- Language:
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English
- Keywords:
- Pubs id:
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pubs:747065
- UUID:
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uuid:277ea049-f3cf-48c6-b74c-d06c620f448a
- Local pid:
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pubs:747065
- Source identifiers:
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747065
- Deposit date:
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2017-12-07
Terms of use
- Copyright holder:
- Saenrang et al
- Copyright date:
- 2017
- Notes:
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© The Author(s) 2017. This article is licensed under a Creative Commons
Attribution 4.0 International License, which permits use, sharing,
adaptation, distribution and reproduction in any medium or format, as long as you give
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Commons license, and indicate if changes were made. The images or other third party
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regulation or exceeds the permitted use, you will need to obtain permission directly from
the copyright holder. To view a copy of this license, visit http://creativecommons.org/
licenses/by/4.0/.
- Licence:
- CC Attribution (CC BY)
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