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

页码：114 / 121

页数：8

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