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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