Pressure-induced successive magnetic phase transitions in the spin gap system TlCuCl3

被引：32
|
作者：
Oosawa, A [1 ]
Kakurai, K
Osakabe, T
Nakamura, M
Takeda, M
Tanaka, H
机构：
[1] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
[2] Tokyo Inst Technol, Res Ctr Low Temp Phys, Meguro Ku, Tokyo 1528551, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2004年 / 73卷 / 06期
关键词：
TlCuCl3; spin gap; pressure-induced magnetic ordering; successive magnetic phase transitions; spin reorientation; polarized neutron elastic scattering;
D O I：
10.1143/JPSJ.73.1446
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Under the hydrostatic pressure P = 1.48 GPa, polarized neutron elastic scattering experiments have been carried out on the coupled spin dimer system TlCuCl3 with the gapped ground state at ambient pressure. Pressure-induced magnetic ordering occurs at the transition temperature T-N = 16.9 K. As in the field-induced and impurity-induced magnetic ordered phases, the ordered moments lie in the a-c plane just below T-N. An additional spin reorientation (SR) phase transition was observed at T-SR = 10 K, where the ordered moments start to incline toward the b-axis. The temperature variations of the direction and the magnitude of the ordered moments were also investigated.
引用
收藏
页码：1446 / 1449
页数：4
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