uranium-platinum | 12535-18-1

• 分子结构分类: 无机化合物 - 均相金属化合物 - 金属间过渡金属化合物
• 英文名称: uranium-platinum
• 英文别名: Platinum--uranium (1/1)；platinum;uranium
• CAS: 12535-18-1
• 化学式: PtU
• 分子量: 433.109
• InChiKey: CISBBXZTPYOKKX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.0
• 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：

  铀 、 铂 以 neat (no solvent) 为溶剂， 生成 uranium-platinum
  参考文献：
  名称：

  UPt的磁性

  摘要：

  摘要 介绍了高压下 UPt 的磁和电特性的最新结果，以及中子衍射和中子去极化研究的结果。实验指出 UPt 中有两种不同的磁性相，订购温度分别为 19 和 27 K。内部应力和氧化物含量决定了这两个相中的每一个在特定样品中的存在量。有序温度为 27 K 的磁相在 4 kbar 下表现出铁磁到反铁磁的转变。这种反铁磁相的特征是在 4.2 K 时通过 3 T 场的变磁跃迁。

  DOI：

  10.1016/0304-8853(85)90011-3

文献信息

• Magnetism in UPt
  作者：Karel Prokes、Jacques C P Klaasse、Isameldin H Hagmusa、Alois A Menovsky、Ekkehard H Brück、Frank R de Boer、Toshizo Fujita

  DOI：10.1088/0953-8984/10/47/015

  日期：1998.11.30

  Bulk studies of UPt show clearly that this material orders magnetically below 28 K. In contrast to numerous previous studies we found that the low-temperature properties can be explained only by the presence of an energy gap (22-35 K) in the dispersion relation of magnons which leads to typical exponential temperature dependencies of magnetic, thermal and electrical transport properties. Another magnetic

  对 UPt 的大量研究清楚地表明，这种材料在 28 K 以下磁性有序。与之前的许多研究相比，我们发现低温特性只能通过色散关系中能隙 (22-35 K) 的存在来解释导致磁、热和电传输特性的典型指数温度依赖性。通过对铸态样品的磁化测量发现的 19 K 附近的另一个磁相变很可能是由于少数相的存在。
• Magnetic properties of the uranium transition metal carbides U2TC2 (T = Ru, Os, Rh, Ir and Pt)
  作者：T. Ebel、K.H. Wachtmann、W. Jeitschko

  DOI：10.1016/0038-1098(95)00516-1

  日期：1996.3

  The magnetic susceptibilities of the title compounds were investigated with a SQUID magnetometer with magnetic flux densities up to 5.5 T in the temperature range between 2 and 300 K. The carbides U2RuC2 and U2OsC2 show strong, weakly temperature-dependent paramagnetism, suggesting an intermediate valence for the uranium atoms, while the ruthenium and osmium atoms do not seem to carry magnetic moments

  摘要 在 2 至 300 K 的温度范围内，使用磁通密度高达 5.5 T 的 SQUID 磁力计研究了标题化合物的磁化率。碳化物 U2RuC2 和 U2OsC2 表现出强烈的、弱随温度变化的顺磁性，表明存在中等价态。对于铀原子，而钌和锇原子似乎不携带磁矩。相比之下，两种碳化物 U2RhC2 和 U2IrC2 显示出与温度相关的顺磁性，这与每个过渡金属位点有一个未成对电子相兼容，而 U2PtC2 的磁化率数据表明每个分子式单元有两个未成对电子。U2RhC2 在 TN = 18(±1) K 的尼尔温度以下表现出复杂的磁行为，
• High temperature electrical resistivity in U1−xLaxPt compounds
  作者：J Rodrı́guez Fernández、J Sánchez Marcos、J.I Espeso、J.C Gómez Sal、K.A Mc Ewen

  DOI：10.1016/s0925-8388(01)01067-2

  日期：2001.7

  We present electrical resistivity measurements on U1-xLaxPt (x = 0, 0.1, 0.2, 0.5, 0.8, 0.9, 1) between 3, and 1000 K. The compounds exhibiting ferromagnetic behaviour (x less than or equal to 0.3) display a maximum at low temperatures and some of them a minimum at higher temperatures. For the non-ordered compounds (x greater than or equal to 0.5) the resistivity increases continuously with temperature. A common feature of the U-rich compounds is the existence of a negative logarithmic temperature dependence of the total resistivity above the maximum, whereas a combination of a linear term plus a logarithmic term is found for the others. Under a Kondo-like framework, a breakdown of the Mattiessen rule is suggested. (C) 2001 Elsevier Science B.V. All rights reserved.
• Pressure effects in intermetallic uranium compounds
  作者：J.J.M. Franse、P.H. Frings、A. van der Liet、A. Menovsky、A. de Visser

  DOI：10.1016/0378-4363(83)90004-9

  日期：1983.12
• Magnetic properties of UPt single crystals
  作者：K. Prokeš、T. Fujita、E. Brück、F. R. de Boer、A. A. Menovsky

  DOI：10.1103/physrevb.60.r730

  日期：——

  Several tiny single crystals of UPt have been prepared and examined by means of magnetic-susceptibility and magnetization measurements. It is shown that UPt, which forms in the monoclinic crystal structure, is ferromagnetically ordered below about 29K. Our studies, with the magnetic field applied along the principal crystallographic axes, point to a strong uniaxial magnetic anisotropy. The U moments of 1.0 mu(B) / U are oriented along the unique b axis of the monoclinic structure. Our study suggests that the low-temperature magnetic properties can be explained only by the presence of an energy gap (similar to 40 K) in the dispersion relation of the ferromagnetic magnons which leads to an exponential temperature dependence of the magnetization.