Einecs 234-619-4 | 12017-43-5

• 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: Einecs 234-619-4
• 英文别名: cobalt;samarium
• CAS: 12017-43-5
• 化学式: Co₂Sm
• 分子量: 268.346
• InChiKey: QJNPLUUKHIGHOW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  3
• 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

• 作为反应物：
  描述：

  Einecs 234-619-4 、 氢气 以 neat (no solvent) 为溶剂， 生成
  参考文献：
  名称：

  Shilov, A. L., Russian Journal of Inorganic Chemistry, 1991, vol. 36, p. 1256 - 1261

  摘要：

  DOI：
• 作为产物：
  描述：

  三氢化钐 、 钴 生成 Einecs 234-619-4
  参考文献：
  名称：

  RCo2化合物的输运性质

  摘要：

  研究了金属间化合物 RCo2（R = Pr、Nd、Sm、Gd-Lu、Sc 和 Y）在 4.2 至 1000 K 的温度范围内的传输特性，并确定了不同的贡献。在非磁性化合物中，自旋波动对电阻率的贡献，rho sf 随 (T / Tsf) 2 变化，而热阻率 Wsf 随 (T / Tsf) 变化，符合理论预测。推导了由传导电子在 4f 矩上散射引起的自旋无序贡献，并发现它与 de Gennes 因子成正比。结果表明，自旋涨落是温度相关热电势低温特性的原因，而高温行为主要由状态密度函数决定。在居里温度附近的顺磁区，

  DOI：

  10.1088/0953-8984/7/33/008

文献信息

• Temperature and magnetic field dependence of the elastic properties of rare earth-cobalt laves phase compounds
  作者：H. Klimker、M.P. Dariel、M. Rosen

  DOI：10.1016/0022-3697(79)90015-5

  日期：1979.1

  determine the elastic moduli, adiabatic compressibility and the Debye temperature of polycrystalline rare earth-cobalt Laves phase compounds RCo2(R = Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er and Lu) and YCo2 between 4.2 and 300 K. DyCo2 HoCo2 and ErCo2 exhibit a first-order transition at Tc. In SmCo2 and TbCo2 the phase transition is of the second-order accompanied by a large lattice softening. NdCo2, GdCo2 and HoCo2

  摘要 为了确定多晶稀土钴 Laves 相化合物 RCo2(R = Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er 和 Lu) 和 YCo2 在 4.2 和 300 K 之间。DyCo2 HoCo2 和 ErCo2 在 Tc 处表现出一阶跃迁。在 SmCo2 和 TbCo2 中，相变是二级相变，伴随着大的晶格软化。NdCo2、GdCo2 和 HoCo2 在低于 Tc 的低温下显示出从一个容易磁化方向到另一个磁化方向的自旋重定向。确定了外部磁场（高达 25 kOe）对这些 Laves 相的弹性特性的影响，即所谓的 ΔE 效应。SmCo2、TbCo2 和 DyCo2 在高达 25 kOe 的磁场中未达到饱和。
• Forker, M.; Mueller, S.; Presa, P. de la, Physical Review B: Condensed Matter and Materials Physics, p. 1 - 13
  作者：Forker, M.、Mueller, S.、Presa, P. de la、Pasquevich, A. F.

  DOI：——

  日期：——
• Magnetic phase transition and magnetic entropy change in (Dy1−xRx)Co2, where R=La and Sm, compounds
  作者：Kun Xie、Weipeng Lv、Xiaoping Song、Yaoming Zhu、Zhanbo Sun

  DOI：10.1016/j.jmmm.2004.07.040

  日期：2005.3

  Magnetization properties were measured for a series of Dy1-xSmxCo2 and Dy1-xLaxCo2 compounds. It was found that the magnetization lowers when the Dy content decreases in the compounds. In both systems, a metamagnetic transition and first-order magnetic phase transition is observed for certain ranges of the Dy content, and gradually weakens until it disappears as the content of Dy decreases. The magnetic entropy changes \DeltaS(m\)\, as a function of the temperature in the magnetic field of 1T for both series of compounds, have been calculated. Although the \DeltaS(m)\ decreases with the decrease of Dy, it does remain fairly large within a certain range of the Dy content. The curie temperature can be adjusted by adjusting x, which indicates that the (Dy1-xRx)Co-2 (R = Sm, La) compounds may have potential applications as magnetic refrigerants. (C) 2004 Elsevier B.V. All rights reserved.
• Kost, M. E.; Raevskaya, M. V.; Shilov, A. L., Russian Journal of Inorganic Chemistry, 1979, vol. 24, p. 1803 - 1805
  作者：Kost, M. E.、Raevskaya, M. V.、Shilov, A. L.、Yaropolova, E. I.、Mikheeva, V. I.

  DOI：——

  日期：——
• Annealing dependence of magnetic properties in nanostructured Sm0.5Y0.5Co5
  作者：J.T. Elizalde-Galindo、J.L. Hidalgo、C.E. Botez、J.A. Matutes-Aquino

  DOI：10.1016/j.jmmm.2008.02.145

  日期：2008.7

  Nanocrystalline Sm0.5Y0.5Co5 powders with high coercivity H-C and enhanced remanence M-r were prepared by mechanical milling and subsequent annealing. Annealing temperatures T ranging from 973 to 1173 K, and times t ranging from 1 to 5 min were used. X-ray diffraction (XRD) and DC-magnetization measurements were carried out to study the microstructure and magnetic properties of these samples. XRD patterns demonstrate that the average grain size < D > of the nanocrystalline powders depends on the annealing temperature T and time t: < D > ranges from 11nm ( for T = 973K and t = 1 min) to 93nm ( for T = 1173K and t = 5 min). Magnetic measurements performed at room temperature indicate high coercivity values (H-C>955 kA/m), and enhanced remanence (M-r/M-max>0.5) for all samples. A strong annealing-induced grain size dependence of these magnetic properties was found. (C) 2008 Elsevier B.V. All rights reserved.