Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders
The magnetic properties of manganite bilayers composed of G-type antiferromagnetic (AFM) SrMnO3 and double-exchange ferromagnetic (FM) La0.7Sr0.3MnO3 are studied. A spin-glass state is observed as a result of competing magnetic orders and spin frustration at the La0.7Sr0.3MnO3/SrMnO3 interface. The...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2014
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| Online Access: | https://hdl.handle.net/10356/80082 http://hdl.handle.net/10220/18703 |
| _version_ | 1826110553098027008 |
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| author | Tendeloo, G. Van Ding, J. F. Lebedev, O. I. Turner, S. Tian, Y. F. Hu, W. J. Seo, J. W. Panagopoulos, C. Prellier, W. Wu, T. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Tendeloo, G. Van Ding, J. F. Lebedev, O. I. Turner, S. Tian, Y. F. Hu, W. J. Seo, J. W. Panagopoulos, C. Prellier, W. Wu, T. |
| author_sort | Tendeloo, G. Van |
| collection | NTU |
| description | The magnetic properties of manganite bilayers composed of G-type antiferromagnetic (AFM) SrMnO3 and double-exchange ferromagnetic (FM) La0.7Sr0.3MnO3 are studied. A spin-glass state is observed as a result of competing magnetic orders and spin frustration at the La0.7Sr0.3MnO3/SrMnO3 interface. The dependence of the irreversible temperature on the cooling magnetic field follows the Almeida-Thouless line. Although an ideal G-type AFM SrMnO3 is featured with a compensated spin configuration, the bilayers exhibit exchange bias below the spin glass freezing temperature, which is much lower than the Néel temperature of SMO, indicating that the exchange bias is strongly correlated with the spin glass state. The results indicate that the spin frustration that originates from the competition between the AFM super-exchange and the FM double-exchange interactions can induce a strong magnetic anisotropy at the La0.7Sr0.3MnO3/SrMnO3 interface. |
| first_indexed | 2024-10-01T02:36:21Z |
| format | Journal Article |
| id | ntu-10356/80082 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:36:21Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/800822023-02-28T19:27:54Z Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders Tendeloo, G. Van Ding, J. F. Lebedev, O. I. Turner, S. Tian, Y. F. Hu, W. J. Seo, J. W. Panagopoulos, C. Prellier, W. Wu, T. School of Physical and Mathematical Sciences Physics and Applied Physics The magnetic properties of manganite bilayers composed of G-type antiferromagnetic (AFM) SrMnO3 and double-exchange ferromagnetic (FM) La0.7Sr0.3MnO3 are studied. A spin-glass state is observed as a result of competing magnetic orders and spin frustration at the La0.7Sr0.3MnO3/SrMnO3 interface. The dependence of the irreversible temperature on the cooling magnetic field follows the Almeida-Thouless line. Although an ideal G-type AFM SrMnO3 is featured with a compensated spin configuration, the bilayers exhibit exchange bias below the spin glass freezing temperature, which is much lower than the Néel temperature of SMO, indicating that the exchange bias is strongly correlated with the spin glass state. The results indicate that the spin frustration that originates from the competition between the AFM super-exchange and the FM double-exchange interactions can induce a strong magnetic anisotropy at the La0.7Sr0.3MnO3/SrMnO3 interface. NRF (Natl Research Foundation, S’pore) Published version 2014-01-24T04:33:53Z 2019-12-06T13:40:21Z 2014-01-24T04:33:53Z 2019-12-06T13:40:21Z 2013 2013 Journal Article Ding, J. F., Lebedev, O. I., Turner, S., Tian, Y. F., Hu, W. J., Seo, J. W., et al. (2013). Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders. Physical Review B - Condensed Matter and Materials Physics, 87(5), 054428-. https://hdl.handle.net/10356/80082 http://hdl.handle.net/10220/18703 10.1103/PhysRevB.87.054428 en Physical review B - condensed matter and materials physics © 2013 American Physical Society. This paper was published in Physical Review B - Condensed Matter and Materials Physics and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1103/PhysRevB.87.054428]. 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. application/pdf |
| spellingShingle | Physics and Applied Physics Tendeloo, G. Van Ding, J. F. Lebedev, O. I. Turner, S. Tian, Y. F. Hu, W. J. Seo, J. W. Panagopoulos, C. Prellier, W. Wu, T. Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders |
| title | Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders |
| title_full | Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders |
| title_fullStr | Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders |
| title_full_unstemmed | Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders |
| title_short | Interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders |
| title_sort | interfacial spin glass state and exchange bias in manganite bilayers with competing magnetic orders |
| topic | Physics and Applied Physics |
| url | https://hdl.handle.net/10356/80082 http://hdl.handle.net/10220/18703 |
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