uranium stannide | 206853-50-1

• 英文名称: uranium stannide
• 英文别名: lambda~2~-Stannane--uranium (2/1)；λ2-stannane;uranium
• CAS: 206853-50-1
• 化学式: Sn₂U
• 分子量: 475.449
• InChiKey: QIAAKPAABOFUPR-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  铀 、 tin 以 melt 为溶剂， 生成 uranium stannide
  参考文献：
  名称：

  准二元 U(Ge1−xSnx)2 化合物中铁磁和反铁磁交换相互作用之间的竞争

  摘要：

  摘要 利用119 Sn Mossbauer光谱研究了0.01≤ x ≤1时准二元化合物U(Ge 1− x Sn x ) 2 中磁有序温度TM 和低温磁结构的演变。这些化合物是铁磁体 UGe 2 (TC =52 K) 和反铁磁体 USn 2 (TN =75 K) 之间的固溶体，两者共线。边界化合物具有不同的易磁化方向，分别是 a 轴和 c 轴。已发现 x = 0.58 时的最低订购温度 (T min ≈36 K)。在较低 Sn 浓度下观察到的复杂 Mossbauer 光谱可归因于两种非共线自旋配置的出现，其特征是 U 磁矩对之间的倾斜角分别为 60° 和 120°。当增加 Sn 浓度超过 x =0.58 时，

  DOI：

  10.1016/s0925-8388(02)00145-7

文献信息

• Gibbs energies of formation of the intermetallic compounds of U–Sn system
  作者：Ashit K. Pattanaik、R. Kandan、K. Nagarajan、P.R. Vasudeva Rao

  DOI：10.1016/j.jallcom.2012.09.144

  日期：2013.2

  Gibbs energies of formation of the intermetallic compounds, USn3, U3Sn7, USn2, and USn were determined by using high temperature molten salt galvanic cells: U(s)//UCl3 in LiCl-KCl (eutectic)//U-Sn alloy, where pure uranium was used as one of the electrodes and a two phase alloy of uranium and tin as the other. The two phase alloys used in cells I, II, III and IV as the electrodes were < USn3 > + Sn}, < U3Sn7 + USn3 >, < USn2 + U3Sn7 > and < USn + USn2 >, respectively. The Gibbs energies of formation (Delta(f)G(0)) of USn3, U3Sn7, USn2 and USn with respect to alpha-U and liquid Sn, in the temperature range 682-905 K, were determined to be given byDelta(f)G(0)(USn3)(kJ mol(-1)) = -172.8 + 0.061T (K),Delta(f)G(0)(U3Sn7)(kJ mol(-1)) = -527.8 + 0.200T (K),Delta(f)G(0)(USn2)(kJ mol(-1)) = -174.9 + 0.073T (K),Delta(f)G(0)(USn)(kJ mol(-1)) = 176.9 + 0.064T (K)The Gibbs energy of formation for U3Sn7, USn2 and USn have been obtained for the first time. (C) 2012 Elsevier B. V. All rights reserved.
• The phase diagrams of the ScSn and ScPb systems
  作者：A. Palenzona、P. Manfrinetti

  DOI：10.1016/0925-8388(94)06014-2

  日期：1995.4

  The phase diagrams of the Sc-Sn and Sc-Pb systems have been investigated using differential thermal analysis (DTA), metallographic analysis, X-ray diffraction (XRD) and electron microscopy.The Sc-rich side of both systems (0-30 at.% Sn or Pb) has not been studied owing to the high melting temperatures of the corresponding alloys and contamination of the samples by the container material (Mo).The two systems are very similar to one another; with tin, however, two more intermediate phases are formed. Sc(5)X(3) and Sc(6)X(5) compounds are isomorphous, Mn5Si3 and Ti6Ge5 types respectively. ScSn2 is a new intermetallic compound with a new structure type. The impossibility of finding single crystals for XRD prevented the determination of the structure and then of the exact stoichiometry for ScSn which was assigned taking into account the results of DTA, XRD, optical and electronic microanalysis. Sc(5)X(3), different from the other intermediate phases, shows appreciable solid solution range towards compositions richer in X.
• A magnetic study of USn2−xGex alloys
  作者：P Manfrinetti

  DOI：10.1016/j.jallcom.2003.07.011

  日期：2004.4.14

  We have investigated the pseudo-binary solid solutions USn2-xGex (x = 0.1, 0.2, 0.4, 0.6, 0.8, and 1) by magnetization, heat capacity, and resistivity measurements. The iso-structural end members USn2 and UGe2 are known to be antiferromagnetic and ferromagnetic, respectively. The solid solutions retain the same ZrGa2-type orthorhombic structure and the lattice parameters vary smoothly across the series. Evidence for long-range magnetic transitions is clearly seen in the data. USnGe is ferromagnetic like UGe2 with a saturation moment of 0.95 mu(B)/U at 4.2 K. On the other hand, USn1.2Ge0.8 and alloys with x < 0.8 are antiferromagnetic. The coefficient of the linear term in the heat capacity is enhanced in the solid solutions compared to the end members. (C) 2003 Elsevier B.V. All rights reserved.
• Magnetic properties of the binary uranium stannides
  作者：P. Boulet、H. Noël

  DOI：10.1016/s0038-1098(98)00179-3

  日期：1998.5

  The structural chemistry and magnetic properties of the binary uranium stannides have been reinvestigated. Together with the well defined tristannide USn3 (AuCu3 type), the formation of all the recently reported binary uranium stannides is confirmed: U3Sn7 (Ce3Sn7 type), USn2 (ZrGa2 type), USn (ThIn type) and U5Sn4 (Ti5Ga4 type) and magnetic studies of these latter compounds have been carried out for the first time. USn3 is a spin fluctuating system and all the other binaries order magnetically at low temperature. U3Sn7 and USn2 are antiferromagnets with T-N = 50 K and 75 K and USn and U5Sn4 exhibit ferromagnetic ordering below T-C = 55 K and 65 K respectively. An interesting feature is that in each of these last two compounds, one of the uranium sublattices is characterized by very short uranium-uranium distances of 3.11 Angstrom which lies far below the Hill limit. (C) 1998 Elsevier Science Ltd. All rights reserved.
• Neutron diffraction studies of the binary uranium stannides USn2 and U3Sn7
  作者：Pascal Boulet、Gilles André、Françoise Bourée、Henri Noël

  DOI：10.1016/s0925-8388(01)01616-4

  日期：2001.11

  Neutron powder diffraction experiments have been performed on the two structurally related compounds U3Sn7 and USn2. The crystal structures of these two compounds were refined for the first time, confirming isotypism with Ce3Sn7 and ZrGa2 structure types, respectively. The antiferromagnetic ordering suggested by susceptibility measurement on USn2 was confirmed and the magnetic structure was solved. It corresponds to a collinear antiferromagnetic structure with a propagation vector k=(0, 0, 1/2). The magnetic moment derived from Rietveld refinement of the neutron powder diffraction pattern at 1.5 K is 1.56 mu (B)/U. The presence of antiferromagnetic ordering in the U,Sn, compound was confirmed, but the magnetic structure model could not be determined due to the very low intensity of the magnetic Bragg peaks, (C) 2001 Elsevier Science B.V. All rights reserved.