Anomalous Magnetic Phase Diagram of CeTe under High Pressure

被引：4
|
作者：
Takaguchi, Hiroaki [1 ]
Hayashi, Yuya [1 ]
Matsumura, Takeshi [1 ,2 ]
Umeo, Kazunori [1 ,3 ]
Sera, Masafumi [1 ,2 ]
Ochiai, Akira [4 ]
机构：
[1] Hiroshima Univ, AdSM, Dept Quantum Matter, Higashihiroshima, Hiroshima 7398530, Japan
[2] Hiroshima Univ, Inst Adv Mat Res, Higashihiroshima, Hiroshima 7398530, Japan
[3] Hiroshima Univ, N BARD, Cryogen & Instrumental Anal Div, Higashihiroshima, Hiroshima 7398526, Japan
[4] Tohoku Univ, Grad Sch Sci, Dept Phys, Sendai, Miyagi 9808578, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2015年 / 84卷 / 04期
关键词：
CERIUM MONOCHALCOGENIDES; NEUTRON-SCATTERING; CEB6; TMTE;
D O I：
10.7566/JPSJ.84.044708
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have investigated the anomalous ordered phase of CeTe under high pressure, which has been suggested to be an antiferroquadrupole ordered phase. An anisotropic magnetic phase diagram has been obtained from magnetization and specific heat measurements for the three main field directions along [100], [110], and [111]. We discuss the magnetic phase diagram using a two-sublattice mean-field calculation including antiferromagnetic and antiferroquadrupolar interactions. The anomalous ordered phase can be interpreted as an antiferromagnetic ordered phase, which is strongly affected by the antiferroquadrupolar interaction through the off-diagonal matrix element between the Gamma(7) crystal-field ground state and the Gamma(8) excited state.
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页数：6
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