Abstract
Large single crystals of rare-earth rhenium aluminide , with , and Gd–Lu were grown out of an Al-rich solution. Single crystal x-ray diffraction data confirmed the orthorhombic structure for all members: with -structure type (formula unit per cell ); , and Ho–Lu with -structure type . There is no evidence of a localized electron moment in and Lu; is nonmagnetic down to 1.8 K, but develops an enhanced electronic specific heat of . Ordering temperatures range from ferromagnetic order in with , antiferromagnetic order in at , to , Ho, and Er giving magnetic ordering temperatures of , , and 1.1(2) K, respectively. All compounds have effective moments close in value to that of free at high temperatures.
5 More- Received 17 March 2009
DOI:https://doi.org/10.1103/PhysRevB.79.174429
©2009 American Physical Society