uranium stannide | 12040-05-0

• 英文名称: uranium stannide
• 英文别名: lambda~2~-Stannane--uranium (3/1)；λ2-stannane;uranium
• CAS: 12040-05-0
• 化学式: Sn₃U
• 分子量: 594.159
• InChiKey: CCKZXUMELOJJDH-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  铀 、 tin 以 neat (no solvent) 为溶剂， 生成 uranium stannide
  参考文献：
  名称：

  U(Sn1−xMx)3 化合物（M = Al、Ga、Ge）中近藤云的形成

  摘要：

  摘要 USn3 与其相邻的化合物 UAl3、UGa3、USi3 和 UGe3 相比，具有 169 mJ 摩尔-1 K-2 的异常高 γ 值。为了研究这种高 γ 值的形成，我们制备了伪二元 U(Sn1−xMx)3 化合物（M = Al、Ga、Si、Ge 和 x = 0、0.1、0.25、0.5）。从 X 射线衍射、比热和磁化率测量我们得出结论，高 γ 值不仅是由于 f-配体杂交，还因为近藤云的形成（40%）。

  DOI：

  10.1016/0925-8388(94)01377-2

文献信息

• Magnetic-to-nonmagnetic transition in the pseudobinary system U(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ga</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi mathvariant="normal">−</mml:mi><mml:mi mathvariant="italic">x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Sn</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>
  作者：D. Kaczorowski、R. Troć、D. Badurski、A. Böhm、L. Shlyk、F. Steglich

  DOI：10.1103/physrevb.48.16425

  日期：——

  The temperature dependences of both the electrical resistivity and magnetic susceptibility were measured for the pseudobinary alloy U(Ga1-xSnx)3. Moreover, the temperature variation of the specific heat was determined for UGa3. The results show a clear evolution in magnetic behavior of the system studied from a weakly temperature-dependent paramagnetism with a long-range antiferromagnetic ordering at 67 K in UGa3 to a strongly temperature-dependent paramagnetism, but without any magnetic order, in USn3. The properties of UGa3 are discussed in terms of itinerant 5f-electron magnetism. In contrast, some arguments are given for local 5f-electrons in USn3, which behaves as a nonmagnetic ''Kondo-lattice'' system with T(K) congruent-to 60 K.
• 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].
• 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.
• 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.