SmMIn5 ( M = Co, Rh, Ir ) crystallizes in the tetragonal HoCoGa5-type structure. This type of crystal structure is noticed as tetragonal variants of the AuCu 3-structure, in which new superconductors were discovered. PuCoGa5 and PuRhGa5 are also the interesting superconductors. On the other hand, it is expected that Sm has a ground state similar to Pu compounds. We have succeeded in growing single crystals of SmMIn5 by the flux method. SmRhIn5 and SmIrIn5 showed the antiferromagnetic ordering and extra transitions below TN, which is almost same as the results in the previous report. We have succeeded in growing single crystals of SmCoIn5. It also showed the antiferromagnetic ordering and extra transitions below TN = 11.9 K. The temperatures of these anomalies are 6, 7.6 and 11.9 K and lowest found in SmMIn5 compounds.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering