Effect of Fe-subsitution on charge ordering in Ca-rich manganites Pr1-xCaxMnO3

被引：4
|
作者：
Kasper, NV
Hönig, T
Hamad, N
Bärner, K
Rao, GH
Sun, JR
Troyanchuk, IO
Khalyavin, DD
机构：
[1] Univ Gottingen, Inst Phys 4, D-37073 Gottingen, Germany
[2] Acad Sci Belarus, Inst Solid State & Semicond Phys, BY-220072 Minsk, BELARUS
[3] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
[4] Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2000年 / 222卷 / 1-2期
关键词：
manganites; doping; charge ordering; magnetization; resistivity;
D O I：
10.1016/S0304-8853(00)00535-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetization and resistivity of Pr1-xCaxMn1-yFeyO3 (x = 0.6, 0.7, 0.8; y = 0, 0.05, 0.1, and 0.15) manganites have been investigated between 77 and 350 K. The substitution of Mn with Fe does not affect markedly the lattice constants of the studied compounds, but suppresses strongly the charge ordering. These compounds show semiconductive behavior in the investigated temperature range independent of the Fe concentration. Increase of the Fe content leads to increasing magnetization at low temperatures, but none of the compositions shows a pronounced ferromagnetic component. We connect the observed behavior with the bi-strips model of charge ordering as developed for the Pr1-xCaxMnO3 compounds in the concentrational: range 0.3 less than or equal to x < 0.75. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：28 / 32
页数：5
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