Magnetic and electronic transport properties of Y- and Ho-doped La0.9Te0.1MnO3

被引：6
作者：
Zheng, Gan-Hong [1 ]
Sun, Yu-Ping [1 ]
Zhu, Xue-Bing [1 ]
Song, Wen-Hai [1 ]
机构：
[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
来源：
PHYSICS LETTERS A | 2006年 / 356卷 / 01期
关键词：
manganites; antiferromagnetic coupling; insulator-metal transition;
D O I：
10.1016/j.physleta.2006.03.015
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magnetic and electronic transport properties of the electron-doped nianganites La(0.9-x)A(x)Te(0.1)MnO(3) (A= Y or Ho. 0.05 <= x <= 0.15) have been investigated by measurements of magnetization, resistivity and magnetoresistance. All samples undergo a paramagnetic (PM)-ferromagnetic (FM) phase transition at Curie temperature T-C and T-C shifts to lower temperature with increasing Y/Ho doping level. It is very interesting to find that the values of T-C and M of the Ho composition are smaller than those of the Y composition for the same concentration, although Y and Ho ions have almost the same ionic radii. Electronic transport measurements indicate that the Ho-doped compound have higher resistivity than the Y-doped one for the same doping level. These observed results are discussed according to the antiferromagnetic (AFM) coupling of the Ho magnetic moment to that of Mn. (c) 2006 Elsevier B.V. All rights reserved.
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收藏
页码：79 / 84
页数：6
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