Low-temperature magnetic properties of RE2Ni21B 6 (RE = Er, Tm, Yb and Lu)

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作者：
Department of Electrical Engineering, Faculty of Engineering, Fukuoka Institute of Technology, 3-30-1 Wajiro-Higashi, Higashi-Ku, Fukuoka 811-0295, Japan [1 ]
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机构：
[1] Kitagawa, J.
[2] Takeda, N.
[3] Ishikawa, M.
来源：
Kitagawa, J. (j-kitagawa@fit.ac.jp) | 1600年 / Elsevier Ltd卷 / 561期
关键词：
The low-temperature magnetic properties of RE2Ni 21B6 (RE = Er; Tm; Yb and Lu) crystallizing into a cubic C6Cr23-type structure were investigated by measuring magnetic susceptibility; electrical resistivity and specific heat. An off-stoichiometric Er compound with a single phase undergoes antiferromagnetic ordering at 0.61 K. Tm and Yb compounds have no magnetic ordering down to 50 mK. The 4f-electron ground state under a cubic crystalline electric field was deduced by the analysis of the specific heat for each magnetic compound. Tm 2Ni21B6 is considered to have the non-Kramers T3-doublet ground state with a quadrupolar moment. The quadrupolar moment does not show a long-range order; but probably enters into a glass state owing to the presence of atomic disorder. Our study suggests that atomic disorder degrades the long-range nature of quadrupolar interactions. © 2013 Elsevier B.V. All rights reserved;
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