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Title: Anomalous exchange bias at collinear/noncollinear spin interface
Authors: Tian, Y. F.
Ding, J. F.
Lin, W. N.
Chen, Z. H.
David, A.
He, M.
Hu, W. J.
Chen, Lang
Wu, Tom
Issue Date: 2013
Source: Tian, Y. F., Ding, J. F., Lin, W. N., Chen, Z. H., David, A., He, M., et al. (2013). Anomalous exchange bias at collinear/noncollinear spin interface. Scientific Reports, 3.
Series/Report no.: Scientific reports
Abstract: We report on the interfacial magnetic coupling in manganite bilayers of collinear ferromagnetic La0.7 Sr0.3 MnO3 and noncollinear multiferroic TbMnO3. Exchange bias is observed at the Néel temperature of TbMnO3 (∼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 TbMnO3, which in turn influences the magnetic coupling across the interface. On the other hand, the enhancement of coercivity in La0.7 Sr0.3 MnO 3/TbMnO3 shows monotonous temperature dependence. Our results illustrate a strong interfacial magnetic interaction at the La 0.7 Sr 0.3 MnO3/TbMnO3 interface, highlighting the roles of competing spin orders, magnetic frustration, and coupling between multiple spin sublattices in artificial collinear/noncollinear spin heterostructures.
ISSN: 2045-2322
DOI: 10.1038/srep01094
Rights: © 2013 The Authors(Nature Publishing Group). This paper was published in Scientific Reports and is made available as an electronic reprint (preprint) with permission of The Authors(Nature Publishing Group). The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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