Structure and physical properties of RT2Cd20 (R=rare earth, T=Ni, Pd) compounds with the CeCr2Al20-type structure

被引：31
|
作者：
Burnett, V. W. [1 ,2 ]
Yazici, D. [1 ,2 ]
White, B. D. [1 ,2 ]
Dilley, N. R. [3 ]
Friedman, A. J. [1 ,2 ]
Brandom, B. [1 ,2 ]
Maple, M. B. [1 ,2 ]
机构：
[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
[2] Univ Calif San Diego, Ctr Adv Nanosci, La Jolla, CA 92093 USA
[3] Quantum Design, San Diego, CA 92121 USA
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2014年 / 215卷
关键词：
Cage structure; Rare-earth cadmium based intermetallics; Magnetic order; Specific heat; CeCr2Al20; MAGNETIC-PROPERTIES; RU; RH; CO; RT2ZN20; T=FE; RE; LA; OS;
D O I：
10.1016/j.jssc.2014.03.035
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Eleven new compounds, R Ni2Cd20 (R=Y, La-Nd, Sm, Gd, Tb) and R Pd2Cd20 (R=Ce, Pr, Sm), were grown as single crystals in high temperature cadmium-rich solutions. They crystallize in the cubic CeCr2Al20-type structure (Fd (3) over barm, Z=8) as characterized by measurements of powder X-ray diffraction. Electrical resistivity, magnetization, and specific heat measurements were performed on R Ni2Cd20 (R=Y, La Nd, Sm, Gd, Tb) single crystals. Whereas YNi2Cd20 and LaNi2Cd20 exhibit unremarkable metallic behavior, when magnetic moments from localized 4f electron states (Gd3+Tb3+) are embedded into this host, they exhibit ferromagnetic order with values of the Curie temperature T-C for R Ni2Cd20 (R=Gd, and Tb) which scale with the de Gennes factor. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码：114 / 121
页数：8
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