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Properties of RRe2Al10 (R=Y, Gd–Lu) crystals
Physical Review B
  • Athena S. Sefat, Iowa State University
  • Sergey L. Bud'ko, Iowa State University
  • Paul C. Canfield, Iowa State University
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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.


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

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American Physical Society
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Athena S. Sefat, Sergey L. Bud'ko and Paul C. Canfield. "Properties of RRe2Al10 (R=Y, Gd–Lu) crystals" Physical Review B Vol. 79 (2009) p. 174429
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