Separation of Curie temperature and insulator-metal transition temperature in the La0.7Sr0.3MnO3 polycrystalline films and its effect on low field magnetoresistance
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- 作者：Yingjie Wua ; b ; Xingkun Ningb ; Zhanjie Wanga ; b ; c ; wangzj@imr.ac.cn" class="auth_mail" title="E-mail the corresponding author ; Qiang Wangc ; Zhidong Zhangb
- 关键词：La0.7Sr0.3MnO3 films ; Pulsed laser deposition ; Microstructures ; Mn3+/Mn4+ ratios ; Low field magnetoresistance
- 刊名：Journal of Alloys and Compounds
- 出版年：2016
- 出版时间：15 May 2016
- 年：2016
- 卷：667
- 期：Complete
- 页码：317-322
- 全文大小：2383 K
文摘
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The ΔT(TC − TIM) of the LSMO films deposited at different temperatures was studied.
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SEM and XPS were used to study the microstructures and the electric structures.
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The ΔT was tuned by modulating the Mn3+/Mn4+ ratios and the microstructures.
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The ΔT values could strongly affect the LFMR properties of the LSMO films.