DC Magnetization of the heavy-fermion compound YbCo2Zn20 was examined at very-low temperatures down to 0.07 K in the field up to 14.5 T. In addition to the nearly-isotropic metamagnetic behavior at 0.6 T, a new metamagnetic behavior is observed in the field variation of magnetization M(H) at 6 T only for H || . For the same field direction, a clear kink appears in the temperature dependence of the magnetization M(T) for fields above 6 T. These results strongly suggest the existence of a new ordered phase induced by magnetic fields. The H - T phase diagram as well as the anisotropy in M(H) above ∼ 2 T are best explained by a level crossing of the low-lying crystalline-electric- field states by magnetic fields.
|ジャーナル||Journal of Physics: Conference Series|
|出版ステータス||出版済み - 2012|
|イベント||International Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, 英国|
継続期間: 8 29 2011 → 9 3 2011
All Science Journal Classification (ASJC) codes