Anomalous exchange bias at collinear/noncollinear spin interface

We report on the interfacial magnetic coupling in manganite bilayers of collinear ferromagnetic La(0.7)Sr(0.3)MnO(3) and noncollinear multiferroic TbMnO(3). Exchange bias is observed at the Néel temperature of TbMnO(3) (~41 K) due to the onset of long-range antiferromagnetic ordering in the Mn spin...

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Autores principales: Tian, Y. F., Ding, J. F., Lin, W. N., Chen, Z. H., David, A., He, M., Hu, W. J., Chen, L., Wu, T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3549540/
http://dx.doi.org/10.1038/srep01094
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author Tian, Y. F.
Ding, J. F.
Lin, W. N.
Chen, Z. H.
David, A.
He, M.
Hu, W. J.
Chen, L.
Wu, T.
author_facet Tian, Y. F.
Ding, J. F.
Lin, W. N.
Chen, Z. H.
David, A.
He, M.
Hu, W. J.
Chen, L.
Wu, T.
author_sort Tian, Y. F.
collection PubMed
description We report on the interfacial magnetic coupling in manganite bilayers of collinear ferromagnetic La(0.7)Sr(0.3)MnO(3) and noncollinear multiferroic TbMnO(3). Exchange bias is observed at the Néel temperature of TbMnO(3) (~41 K) due to the onset of long-range antiferromagnetic ordering in the Mn spin sublattice. Interestingly, an anomalous plateau of exchange bias emerges at the ordering temperature of Tb spins (~10 K), and we ascribe this unique feature to the strong coupling between Tb and Mn spin sublattices in TbMnO(3), which in turn influences the magnetic coupling across the interface. On the other hand, the enhancement of coercivity in La(0.7)Sr(0.3)MnO(3)/TbMnO(3) shows monotonous temperature dependence. Our results illustrate a strong interfacial magnetic interaction at the La(0.7)Sr(0.3)MnO(3)/TbMnO(3) interface, highlighting the roles of competing spin orders, magnetic frustration, and coupling between multiple spin sublattices in artificial collinear/noncollinear spin heterostructures.
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spelling pubmed-35495402013-01-23 Anomalous exchange bias at collinear/noncollinear spin interface Tian, Y. F. Ding, J. F. Lin, W. N. Chen, Z. H. David, A. He, M. Hu, W. J. Chen, L. Wu, T. Sci Rep Article We report on the interfacial magnetic coupling in manganite bilayers of collinear ferromagnetic La(0.7)Sr(0.3)MnO(3) and noncollinear multiferroic TbMnO(3). Exchange bias is observed at the Néel temperature of TbMnO(3) (~41 K) due to the onset of long-range antiferromagnetic ordering in the Mn spin sublattice. Interestingly, an anomalous plateau of exchange bias emerges at the ordering temperature of Tb spins (~10 K), and we ascribe this unique feature to the strong coupling between Tb and Mn spin sublattices in TbMnO(3), which in turn influences the magnetic coupling across the interface. On the other hand, the enhancement of coercivity in La(0.7)Sr(0.3)MnO(3)/TbMnO(3) shows monotonous temperature dependence. Our results illustrate a strong interfacial magnetic interaction at the La(0.7)Sr(0.3)MnO(3)/TbMnO(3) interface, highlighting the roles of competing spin orders, magnetic frustration, and coupling between multiple spin sublattices in artificial collinear/noncollinear spin heterostructures. Nature Publishing Group 2013-01-21 /pmc/articles/PMC3549540/ http://dx.doi.org/10.1038/srep01094 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Tian, Y. F.
Ding, J. F.
Lin, W. N.
Chen, Z. H.
David, A.
He, M.
Hu, W. J.
Chen, L.
Wu, T.
Anomalous exchange bias at collinear/noncollinear spin interface
title Anomalous exchange bias at collinear/noncollinear spin interface
title_full Anomalous exchange bias at collinear/noncollinear spin interface
title_fullStr Anomalous exchange bias at collinear/noncollinear spin interface
title_full_unstemmed Anomalous exchange bias at collinear/noncollinear spin interface
title_short Anomalous exchange bias at collinear/noncollinear spin interface
title_sort anomalous exchange bias at collinear/noncollinear spin interface
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3549540/
http://dx.doi.org/10.1038/srep01094
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