uranium trialuminide | 12004-79-4

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 各种混合金属/非金属
• 英文名称: uranium trialuminide
• 英文别名: Aluminium--uranium (3/1)；alumane;uranium
• CAS: 12004-79-4
• 化学式: Al₃U
• 分子量: 318.974
• InChiKey: VWJDAGSOBGQGTO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -3.55
• 重原子数：
  4
• 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：

  铀 、 氢化铝 生成 uranium trialuminide
  参考文献：
  名称：

  异常压缩 - 一项实验和计算研究

  摘要：

  在高达 23 GPa 的压力下进行了高压 X 射线衍射实验。在 7 - 14 GPa 的压力范围内观察到系统的异常压缩行为。将实验与 和 中的类似观察进行比较。已经进行了能带结构计算，以通过电子从 f 轨道转移到 d 轨道的概念来寻找对这种行为的可能解释。

  DOI：

  10.1088/0953-8984/9/27/016

文献信息

• The U-Nb-Al ternary system: experimental and simulated investigations of the phase equilibria and study of the crystal structure and electronic properties of the intermediate phases
  作者：Chantal Moussa、Alexandre Berche、Mathieu Pasturel、José Barbosa、Bertrand Stepnik、Sylvie Dubois、Olivier Tougait

  DOI：10.1016/j.jallcom.2016.08.257

  日期：2017.1

  Abstract The phase relations in the ternary U-Nb-Al system were established for the whole concentration range for 900 K and 1200 K. They were derived from quenched samples annealed at 900 K for three months and at 1200 K for two months by using x-ray powder diffraction, scanning electron microscopy and energy dispersive spectroscopic analyses. The formation of the two ternary phases, UNb 2 Al 20 and

  摘要 在 900 K 和 1200 K 的整个浓度范围内建立了三元 U-Nb-Al 体系中的相关系。它们来自于在 900 K 下退火三个月和在 1200 K 下退火两个月的淬火样品，使用 x射线粉末衍射、扫描电子显微镜和能量色散光谱分析。确认了两个三元相UNb 2 Al 20 和U 6 Nb 4 Al 43 的形成。两相均通过包晶反应形成，UNb 2 Al 20 和 U 6 Nb 4 Al 43 分别在 1200(5) K 和 1262(5) K 下形成。单晶结构细化证实UNb 2 Al 20 采用CeCr 2 Al 20 型（立方，F d 3 ¯ m ），U 6 Nb 4 Al 43 与Ho 6 Mo 4 Al 43 型（六方，P 6 3 / 厘米）。等温截面的特征在于 (i) 由于 U 和 Nb 之间以及 Nb 和 Al 之间在 bcc 相（γU 和 Nb）中的相互交换，在 1200 K
• Anomalous compression in - an experimental and computational study
  作者：N V Chandra Shekar、P Ch Sahu、M Rajagopalan、Mohammad Yousuf、K Govinda Rajan

  DOI：10.1088/0953-8984/9/27/016

  日期：1997.7.7

  High-pressure x-ray diffraction experiments were performed on up to 23 GPa. Anomalous compressibility behaviour of the system was observed in the pressure range 7 - 14 GPa. The experiments are compared with similar observations in and . Band structure calculations have been performed to look for a possible explanation of this behaviour through the concept of electron transfer from the f to the d orbitals

  在高达 23 GPa 的压力下进行了高压 X 射线衍射实验。在 7 - 14 GPa 的压力范围内观察到系统的异常压缩行为。将实验与 和 中的类似观察进行比较。已经进行了能带结构计算，以通过电子从 f 轨道转移到 d 轨道的概念来寻找对这种行为的可能解释。
• Leitnaker; Nichols; Lankford, High temperature science, 1988, vol. 28, p. 271 - 291
  作者：Leitnaker、Nichols、Lankford

  DOI：——

  日期：——
• Electronic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">U</mml:mi><mml:mrow><mml:msub><mml:mrow><mml:mi>X</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mi> </mml:mi><mml:mo>(</mml:mo><mml:mi>X</mml:mi><mml:mo>=</mml:mo><mml:mi mathvariant="normal">Ga</mml:mi><mml:mo>,</mml:mo></mml:math>Al, and Sn) compounds in high magnetic fields: Transport, specific heat, magnetization, and quantum oscillations
  作者：A. L. Cornelius、A. J. Arko、J. L. Sarrao、J. D. Thompson、M. F. Hundley、C. H. Booth、N. Harrison、P. M. Oppeneer

  DOI：10.1103/physrevb.59.14473

  日期：——

  We have performed measurements of the specific heat and resistivity in static magnetic fields up to 12 T, as well as magnetic measurements in a static field of 0.1 T and in pulsed fields up to 50 T on high-quality UX3 (X= Ga, Al, and Sn) single crystals. The behavior of the electronic specific heat coefficients in applied field gamma(B) either remains nearly constant or increases as B increases and is inconsistent with the expectations of the single-impurity model. For UGa3, different de Haas-van Alphen (dHvA) frequencies are observed above and below a magnetic transition at a field B(M)similar to 12 T at T similar to 0.5 K, indicating that a major reconstruction of the Fermi surface occurs. Neither USn3 nor UAl3 exhibited a magnetic transition in fields to 50 T, and only a single weak dHvA frequency was observed in these compounds. The difference between the behavior of the UX3 compounds can be attributed to the degree of hybridization of the 5f orbitals with the conduction electron orbitals. UGa3 behaves as an itinerant Sf-electron system, while UAl3 has a tendency to localization, but is still relatively delocalized. USn3 is a heavy fermion compound. Concurrent to our experimental investigations we have performed calculations of the energy band structures of the three compounds. Owing to the delocalized 5f behavior of UGa3, and also of UAl3, we find that an itinerant, energy band approach explains the dHvA frequencies of antiferromagnetic UGa3 and paramagnetic UAl3 reasonably well. For UGa3 an unusual sensitivity of the magnetic moment to the magnetic structure and the lattice parameter occurs, providing evidence that UGa3 is an unique example of an itinerant uranium-based antiferromagnet. [S0163-1829(99)04321-0].
• Magnetic properties of U1−xGdxAl3 and U1−xDyxAl3 systems
  作者：P. Lucaci、E. Burzo、I. Lupsa

  DOI：10.1016/0925-8388(96)02289-x

  日期：1996.5

  Magnetic measurements were performed on U(1-x)R(x)Al(3) compounds with R = Gd and Dy in the temperature range 400-600 K and fields up to 7 T. UAl3 shows a spin fluctuation-type behaviour. The effective uranium moment, determined in the high temperature range, is 3.62 mu(B). When replacing U by Gd or Dy, at low temperatures, a mictomagnetic or antiferromagnetic-type ordering is evidenced. Above the magnetic transition temperatures the susceptibilities follow a Curie-Weiss-type behaviour. The effective uranium moments decrease when the rare earth content is increasing. This behaviour is attributed to gradual quenching of spin fluctuations.