MAGNETIC AND TRANSPORT PROPERTIES OF Pr0.7Sr0.3MnO3/La0.5Ca0.5MnO3/Pr0.7Sr0.3MnO3 TRILAYERS

被引：5

作者：

Wang, H. O. ^{[1
]}

Dai, P. ^{[1
]}

Liu, H. ^{[1
]}

Tan, W. S. ^{[1
]}

Xu, F. ^{[2
]}

Wu, X. S. ^{[3
]}

Jia, Q. J. ^{[4
]}

Hu, G. J. ^{[5
]}

Gao, J. ^{[6
]}

机构：

[1] Nanjing Univ Sci & Technol, Key Lab Soft Chem & Funct Mat, Minist Educ, Dept Appl Phys, Nanjing 210094, Peoples R China

[2] Nanjing Univ Sci & Technol, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China

[3] Nanjing Univ, Natl Key Lab Solid State Microstruct, Dept Phys, Nanjing 210093, Peoples R China

[4] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China

[5] Chinese Acad Sci, Natl Lab Infrared Phys, Shanghai Inst Tech Phys, Shanghai 200083, Peoples R China

[6] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2012年 / 26卷 / 23期

关键词：

Pr0.7Sr0.3MnO3/La0.5Ca0.5MnO3/Pr0.7Sr0.3MnO3; trilayers; interfacial magnetic coupling; transport properties; LA2/3CA1/3MNO3/LA1/3CA2/3MNO3; MULTILAYERS; EXCHANGE; SUPERLATTICES; STATE;

D O I：

10.1142/S0217979212501329

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Pr0.7Sr0.3MnO3/La0.5Ca0.5MnO3/Pr0.7Sr0.3MnO3 (PSMO/LCMO/PSMO) trilayers were deposited on (001)-oriented single crystal MgO by pulsed laser deposition. The thickness of both PSMO layers was 36 nm while the thickness of LCMO layer varied from 6 to 36 nm. High resolution X-ray diffraction patterns indicated that trilayers were well (001)-oriented grown with high crystalline quality, and that PSMO layers were fully-strain-relaxed while LCMO spacer was partially strained. Studies on transport and magnetic properties of trilayers indicated that metal-insulator transition temperature T-MI increased from 200 K to 260 K and the saturation magnetization was suppressed with decreasing thickness of LCMO spacer from 36 to 6 nm. Transport properties of trilayers are associated with enhancement of volume fraction of ferromagnetic clusters in charge ordered and magnetic phase separated LCMO spacer. Interestingly, exchange bias (EB) was not observed in PSMO/LCMO/PSMO trilayers. It was believed that preferential distribution of metallic ferromagnetic clusters in LCMO layer may result in disappearance of EB.

引用

页数：10

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