Reentrant effect on the transport properties of La0.7Sr0.3MnO3 films

被引：1
作者：
Yang, S. Y. [1 ]
Kuang, W. L.
Liou, Yung
Tse, W. S.
Lee, S. F.
Yao, Y. D.
机构：
[1] Natl Taiwan Normal Univ, Inst Electroopt Sci & Technol, Taipei 11623, Taiwan
[2] Acad Sinica, Inst Phys, Taipei 115, Taiwan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2006年 / 45卷 / 07期
关键词：
manganite; thin film; magnetoresistance; polycrystalline; grain boundary; reentrant effect;
D O I：
10.1143/JJAP.45.5754
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this work, the transport properties of polycrystalline manganite La0.7Sr0.3MnO3 (LSMO) films were investigated. The LSMO was grown on MgO(001) and SiO2/Si(001) substrates by using a magnetron dc sputtering technique to obtain polycrystalline films. It was found that the variation in the resistance with the temperature was dominated by the spin fluctuation around the magnetic domain walls. In addition, the reentrant spin glass gave rise to the upturn resistance of the polycrystalline LSMO films at low temperatures. The spin fluctuation and the reentrant effect also led to the significant magnetoresistance occurring in the LSMO films, which is larger than the colossal magnetoresistance of the LSMO film by one order of magnitude.
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页码：5754 / 5756
页数：3
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