Chromium--gallium (1/1) | 12140-03-3

• 英文名称: Chromium--gallium (1/1)
• 英文别名: chromium;gallane
• CAS: 12140-03-3
• 化学式: Cr₀Ga₀
• 分子量: 61.0368
• InChiKey: ILIMVOHEERASBA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.19
• 重原子数：
  2
• 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 、 铬 以 neat (no solvent, solid phase) 为溶剂， 生成 Chromium--gallium (1/1)
  参考文献：
  名称：

  zeta（2）-GaM的晶体学，电子学和磁学研究（M = Cr，Mn或Fe）：迭代磁性的趋势。

  摘要：

  这项对zeta（2）-GaM（M = Cr，Mn或Fe）合金的晶体结构，电子结构和磁性的研究是由最近对晶体学Al（8）Cr（5）结构类型的重新研究推动的zeta（2）-GaMn。异结构化合物zeta（2）-GaFe和zeta（2）-GaCr已使用X射线粉末衍射以及zeta（2）-GaFe的中子粉末衍射进行了精制。使用空间组Rm对其结构进行了细化，对于zeta（2）-GaCr，单元参数a = 12.625（8）A和c = 7.785（10）A，对于a = 12.4368（11）A，c = 7.7642（10） ）对于zeta（2）-GaFe。进行了使用自洽自旋极化TB-LMTO方法的能带结构计算，以了解其电子结构和磁性能。带计算表明，从GaCr到GaFe，磁相互作用从弱反铁磁耦合变为铁磁耦合。磁性测量结果证实了GaFe的铁磁性，并显示了GaCr的弱顺磁响应。

  DOI：

  10.1021/ic035419f

文献信息

• Influence of V and Mn doping on the electrical transport properties of a Cr+1.2at.% Ga alloy
  作者：K.T. Roro、A.R.E. Prinsloo、H.L. Alberts

  DOI：10.1016/j.jallcom.2004.09.072

  日期：2005.5

  Measurements of the electrical resistivity (rho) of a Cr + 1.2 at.% Ga alloy doped with V or Mn, are reported in the temperature range 6-900 K. These measurements were complimented with thermal expansion (alpha) measurements for the undoped Cr + 1.2 at.% Ga alloy in the temperature range 77-450 K. The measurements show interesting behaviour with dopant concentration in that the residual resistivity rho(residual) does not vary smoothly with dopant concentration as expected. On the contrary, rho(residual) shows three peaks as a function of dopant concentration. This behaviour is ascribed to impurity resonant scattering effects which are included in a theoretical model used to explain the observed temperature dependence of the resistivity for these alloys. The resistivity and thermal expansion coefficient of the Cr + 1.2 at.% Ga alloy behaves anomalously close to the ISDW-CSDW phase transition temperature (T-IC). The temperature derivative of the resistivity shows a minimum while the alpha-T curve shows a peak at T-IC in contrast to what is expected. The magnetic phase diagram of the (Cr + 1.2 at.% Ga)(V, Mn) alloy system is constructed from the results of the measurements. (c) 2004 Elsevier B.V. All rights reserved.