2017年4月
Switching of magnetic ground states across the UIr1-xRhxGe alloy system
PHYSICAL REVIEW B
- 巻
- 95
- 号
- 15
- 開始ページ
- 155138-1
- 終了ページ
- 155138-15
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.95.155138
- 出版者・発行元
- AMER PHYSICAL SOC
We investigated the evolution ofmagnetism in the UIr1-xRhx Ge system by the systematic study of high-quality single crystals. Lattice parameters of both parent compounds are very similar, resulting in almost identical nearest interatomic uranium distances close to the Hill limit. We established the x-T phase diagram of the UIr1-xRhx Ge system and found a discontinuous antiferromagnetic/ferromagnetic boundary at x(crit) = 0.56, where a local minimum in ordering temperature andmaximum of the Sommerfeld coefficient gamma approximate to 175 mJ/molK(2) occurs in the UCoGe-URhGe-UIrGe system, signaling an increase in magnetic fluctuation. However, a quantum critical point is not realized because of the finite ordering temperature at x(crit). A magnon gap on the antiferromagnetic side abruptly suppresses magnetic fluctuations. We find a field-induced first order transition in the vicinity of the critical magnetic field along the b axis (H-b, crit) in the entire UIr1-xRhx Ge system, including the ferromagnetic region similar to UCo0.6Rh0.4Ge-URhGe.
- リンク情報
- ID情報
-
- DOI : 10.1103/PhysRevB.95.155138
- ISSN : 2469-9950
- eISSN : 2469-9969
- Web of Science ID : WOS:000400062900002