Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5490963 | Journal of Magnetism and Magnetic Materials | 2017 | 19 Pages |
Abstract
Heusler alloy Co2RuSi has been synthesized by melt-spinning technology successfully. Co2RuSi bulk sample after annealing is composed of an HCP Co-rich phase and a BCC Ru-Si phase, but melt-spinning can suppress the precipitation of the HCP phase and produce a single Co2RuSi Heusler phase. In the XRD pattern, it is found that Ru has a strong preference for the (A, C) sites, though it has fewer valence electrons compared with Co. This site preference is different from the case in Heusler alloys containing only 3d elements and is supported further by first-principles calculations. Melt-spun Co2RuSi has a Ms of 2.67 μB/f.u. at 5 K and a Tc of 491 K. An exothermic peak is observed at 871 K in the DTA curve, corresponding to the decomposition of the Heusler phase. Finally, the site preference and magnetic properties of Co2RuSi were discussed based on electronic structure calculation and charge density difference.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Yuepeng Xin, Yuexing Ma, Hongyue Hao, Hongzhi Luo, Fanbin Meng, Heyan Liu, Enke Liu, Guangheng Wu,