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Increased Curie Temperature Induced by Orbital Ordering in La(0.67)Sr(0.33)MnO(3)/BaTiO(3) Superlattices
Recent theoretical studies indicated that the Curie temperature of perovskite manganite thin films can be increased by more than an order of magnitude by applying appropriate interfacial strain to control orbital ordering. In this work, we demonstrate that the regular intercalation of BaTiO(3) layer...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5772345/ https://www.ncbi.nlm.nih.gov/pubmed/29344742 http://dx.doi.org/10.1186/s11671-018-2441-5 |
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author | Zhang, Fei Wu, Biao Zhou, Guowei Quan, Zhi-Yong Xu, Xiao-Hong |
author_facet | Zhang, Fei Wu, Biao Zhou, Guowei Quan, Zhi-Yong Xu, Xiao-Hong |
author_sort | Zhang, Fei |
collection | PubMed |
description | Recent theoretical studies indicated that the Curie temperature of perovskite manganite thin films can be increased by more than an order of magnitude by applying appropriate interfacial strain to control orbital ordering. In this work, we demonstrate that the regular intercalation of BaTiO(3) layers between La(0.67)Sr(0.33)MnO(3) layers effectively enhances ferromagnetic order and increases the Curie temperature of La(0.67)Sr(0.33)MnO(3)/BaTiO(3) superlattices. The preferential orbital occupancy of e(g)(x(2)–y(2)) in La(0.67)Sr(0.33)MnO(3) layers induced by the tensile strain of BaTiO(3) layers is identified by X-ray linear dichroism measurements. Our results reveal that controlling orbital ordering can effectively improve the Curie temperature of La(0.67)Sr(0.33)MnO(3) films and that in-plane orbital occupancy is beneficial to the double exchange ferromagnetic coupling of thin-film samples. These findings create new opportunities for the design and control of magnetism in artificial structures and pave the way to a variety of novel magnetoelectronic applications that operate far above room temperature. |
format | Online Article Text |
id | pubmed-5772345 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-57723452018-01-30 Increased Curie Temperature Induced by Orbital Ordering in La(0.67)Sr(0.33)MnO(3)/BaTiO(3) Superlattices Zhang, Fei Wu, Biao Zhou, Guowei Quan, Zhi-Yong Xu, Xiao-Hong Nanoscale Res Lett Nano Express Recent theoretical studies indicated that the Curie temperature of perovskite manganite thin films can be increased by more than an order of magnitude by applying appropriate interfacial strain to control orbital ordering. In this work, we demonstrate that the regular intercalation of BaTiO(3) layers between La(0.67)Sr(0.33)MnO(3) layers effectively enhances ferromagnetic order and increases the Curie temperature of La(0.67)Sr(0.33)MnO(3)/BaTiO(3) superlattices. The preferential orbital occupancy of e(g)(x(2)–y(2)) in La(0.67)Sr(0.33)MnO(3) layers induced by the tensile strain of BaTiO(3) layers is identified by X-ray linear dichroism measurements. Our results reveal that controlling orbital ordering can effectively improve the Curie temperature of La(0.67)Sr(0.33)MnO(3) films and that in-plane orbital occupancy is beneficial to the double exchange ferromagnetic coupling of thin-film samples. These findings create new opportunities for the design and control of magnetism in artificial structures and pave the way to a variety of novel magnetoelectronic applications that operate far above room temperature. Springer US 2018-01-17 /pmc/articles/PMC5772345/ /pubmed/29344742 http://dx.doi.org/10.1186/s11671-018-2441-5 Text en © The Author(s). 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Nano Express Zhang, Fei Wu, Biao Zhou, Guowei Quan, Zhi-Yong Xu, Xiao-Hong Increased Curie Temperature Induced by Orbital Ordering in La(0.67)Sr(0.33)MnO(3)/BaTiO(3) Superlattices |
title | Increased Curie Temperature Induced by Orbital Ordering in La(0.67)Sr(0.33)MnO(3)/BaTiO(3) Superlattices |
title_full | Increased Curie Temperature Induced by Orbital Ordering in La(0.67)Sr(0.33)MnO(3)/BaTiO(3) Superlattices |
title_fullStr | Increased Curie Temperature Induced by Orbital Ordering in La(0.67)Sr(0.33)MnO(3)/BaTiO(3) Superlattices |
title_full_unstemmed | Increased Curie Temperature Induced by Orbital Ordering in La(0.67)Sr(0.33)MnO(3)/BaTiO(3) Superlattices |
title_short | Increased Curie Temperature Induced by Orbital Ordering in La(0.67)Sr(0.33)MnO(3)/BaTiO(3) Superlattices |
title_sort | increased curie temperature induced by orbital ordering in la(0.67)sr(0.33)mno(3)/batio(3) superlattices |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5772345/ https://www.ncbi.nlm.nih.gov/pubmed/29344742 http://dx.doi.org/10.1186/s11671-018-2441-5 |
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