a-UGa2 | 12064-23-2

• 英文名称: a-UGa2
• 英文别名: Gallium--uranium (2/1)；gallane;uranium
• CAS: 12064-23-2
• 化学式: Ga₂U
• 分子量: 377.475
• InChiKey: JRQMGIACODRGQQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.37
• 重原子数：
  3
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  氢化镓 、 铀 以 melt 为溶剂， 生成 a-UGa2
  参考文献：
  名称：

  新 UGa2 相的晶体结构

  摘要：

  摘要 通过电弧熔炼合成了一种具有UGa 2 成分的新相。它的晶体结构是从粉末和单晶 X 射线衍射数据中解析出来的，并精制到残值 R = 0.058，RW = 0.154 (S = 1.076)。该相在正交Pu 3 Pd 5 型结构中结晶（a = 9.257(1) A, b = 7.439(1) A 和 c = 9.359(1) A，空间群 Cmcm ），铀和镓共享一个 4c位置。

  DOI：

  10.1016/j.jallcom.2004.10.054

文献信息

• Magnetic ordering in Er1−U Ga2 systems
  作者：P.E. Markin、N.V. Baranov、E.V. Sinitsyn

  DOI：10.1016/0921-4526(91)90671-z

  日期：1991.3

  The magnetic properties of Er(1-x)U(x)Ga2 intermetallic system single crystals with the hexagonal AlB2 type structure were studied.ErGa2 compound (x = 0) is a collinear antiferromagnet with [0 0 1] as easy axis and its Neel temperature (T(N)) is equal to 7.5 K. UGa2 is a ferromagnet with [1 0 0] as easy magnetisation direction, its Curie temperature is equal to 125 K.It is shown that the orientations of the easy axes of uranium and erbium subsystems are constant for the whole region of concentrations, but each subsystem has its own ordering temperature. Hence, the Er(1-x)U(x)Ga2 system has the orthogonal magnetic arrangement of erbium and uranium subsystems. The magnetic behaviour of an erbium subsystem can be analysed in the RKKY model taking into account only the difference of electronic concentrations for the different compositions. The magnetic behaviour of a uranium subsystem does not contradict the results of the RKKY calculations.