Enhancement of Curie Temperature and Magnetoresistance in the
Perovskit es La2/3 Cal/3 Mnl-x Six O3
LI Run-Wei, WANG Zhi-Hong, SUN Ji-Rong, CHEN Xin, SHEN Bao-Gen
State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080
Enhancement of Curie Temperature and Magnetoresistance in the
Perovskit es La2/3 Cal/3 Mnl-x Six O3
LI Run-Wei;WANG Zhi-Hong;SUN Ji-Rong;CHEN Xin;SHEN Bao-Gen
State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080
关键词 ：
75.70.Pa ,
75.30.Kz ,
71.30.+h
Abstract ： Structural, magnetic, and transport properties of perovskite La2/3 Cal/3 Mnl-x Six O3 (x = 0, 0.025, 0.05) have been studied. The incorporation of Si decreases the overall resistivity, but obviously increases the Curie temperature (TC ), metal-insulator transition temperature (TP ), and the magnetoresistance ratio MR (defined as [R(0) - R(H)]/R(0)) near room temperature. Comparing with La2/3 Cal/3 MnO3 the TC , TP , and MR of the sample with x = 0.05 increase by 30, 45K, and 20%, respectively. Lattice effects may play a more important role than the magnetic dilution in the case of low Si substitution.
Key words ：
75.70.Pa
75.30.Kz
71.30.+h
出版日期: 2000-11-01
:
75.70.Pa
75.30.Kz
(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
71.30.+h
(Metal-insulator transitions and other electronic transitions)
引用本文:
LI Run-Wei;WANG Zhi-Hong;SUN Ji-Rong;CHEN Xin;SHEN Bao-Gen. Enhancement of Curie Temperature and Magnetoresistance in the
Perovskit es La2/3 Cal/3 Mnl-x Six O3 [J]. 中国物理快报, 2000, 17(11): 832-834.
2/3 Cal/3 Mnl-x Six O3 . Chin. Phys. Lett., 2000, 17(11): 832-834.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2000/V17/I11/832
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2000, Vol. 17 
