Antiferromagnetic and ferromagnetic phases of UCuSi

Matsuda, Tatsuma; Haga, Yoshinori; Ikeda, Shugo; Galatanu, A.; Onuki, Yoshichika

Physica B; Condensed Matter, 359-361, p.1069 - 1071, 2005/04

https://doi.org/10.1016/j.physb.2005.01.289

We have succeeded in growing a high-quality single crystal of UCuSi with the tetragonal structure by the Sn-flux method and measured the magnetic susceptibility and magnetization. UCuSi is confirmed to order antiferromagnetically below = 106 K, and follows a successive ferromagnetic ordering at = 100 K. The magnetic properties are highly anisotropic, reflecting the crystal structure. An easy-axis of magnetization is found to be the [001] direction (-axis), while the [100] direction (-axis) corresponds to the hard-axis in magnetization. The saturation moment is determined as 1.8/U.