Document Type

Article

Publication Date

5-22-2009

Journal or Book Title

Physical Review B

Volume

79

First Page

174429

DOI

10.1103/PhysRevB.79.174429

Abstract

Large single crystals of rare-earth rhenium aluminide RRe2Al10, with R=Y, and Gd–Lu were grown out of an Al-rich solution. Single crystal x-ray diffraction data confirmed the orthorhombic Cmcm structure for all members: R=Gd-Dy with TbRe2Al10-structure type (formula unit per cell Z=8); R=Y, and Ho–Lu with LuRe2Al10-structure type (Z=12). There is no evidence of a localized 3d electron moment in R=Y and Lu; R=Yb is nonmagnetic down to 1.8 K, but develops an enhanced electronic specific heat of ∼95 mJ mol−1 K−2. Ordering temperatures range from ferromagnetic order in R=Gd with Tc=7.2(1) K, antiferromagnetic order in R=Tbat TN=5.0(3) K, to R=Dy, Ho, and Er giving magnetic ordering temperatures of Tmag=1.7(1), ≤0.4, and 1.1(2) K, respectively. All compounds have effective moments close in value to that of free R3+ at high temperatures.

Comments

This article is from Physical Review B 79 (2009): 174429, doi:10.1103/PhysRevB.79.174429. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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