Jahn-Teller distortion and magnetic transitions in perovskite RMnO3 (R=Ho, Er, Tm, Yb, and Lu)

被引：127
|
作者：
Tachibana, Makoto
Shimoyama, Tomotaka
Kawaji, Hitoshi
Atake, Tooru
Takayama-Muromachi, Eiji
机构：
[1] Natl Inst Mat Sci, ICYS, Tsukuba, Ibaraki 3050044, Japan
[2] Natl Inst Mat Sci, Adv Nano Mat Lab, Tsukuba, Ibaraki 3050044, Japan
来源：
PHYSICAL REVIEW B | 2007年 / 75卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.75.144425
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The perovskite RMnO3 (R=Ho, Er, Tm, Yb, and Lu) were prepared under high pressure and studied with heat capacity and synchrotron x-ray powder diffraction measurements. The temperature interval between the antiferromagnetic transition and the first-order transition to the presumably E-type structure narrows with the decreasing ionic radius of R, and almost closes for R=Lu. Combined with the data for the larger rare earth R, the results show intricate relationship between the complex magnetic phase diagram and significant increase of Jahn-Teller distortion found for the smallest members of RMnO3.
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页数：5
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