Magnetoelectric Coupling in the Pyrochlore Ruthenate Gd2Ru2O7

被引：4
|
作者：
Okamura, Takuma [1 ]
Okazaki, Ryuji [1 ,3 ]
Taniguchi, Hiroki [1 ]
Yasui, Yukio [2 ]
Terasaki, Ichiro [1 ]
机构：
[1] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan
[2] Meiji Univ, Dept Phys, Kawasaki, Kanagawa 2148571, Japan
[3] Tokyo Univ Sci, Fac Sci & Technol, Dept Phys, Noda, Chiba 2788510, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2017年 / 86卷 / 08期
关键词：
DIELECTRIC-CONSTANT; R2RU2O7; R;
D O I：
10.7566/JPSJ.86.084708
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have prepared polycrystalline samples of Gd2Ru2O7, and have measured the dielectric constant, magnetization and magnetostriction in external fields from 0 to 7 T below 15 K. We find that the dielectric constant of Gd2Ru2O7 significantly changes with external fields, and reveal a finite magnetoelectric coupling in this oxide. Using a simple model in which the spins on the Gd ions feel an internal magnetic field of 7 T from the Ru clusters, we have explained magnetization and magnetoelectric effects qualitatively.
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页数：4
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