Cobalt;terbium | 12432-89-2

• 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: Cobalt;terbium
• 英文别名: cobalt;terbium
• CAS: 12432-89-2
• 化学式: CoTb₃
• 分子量: 535.769
• InChiKey: HVSJGCDWBMHAFA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.0
• 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：

  氢化铽 、 钴 以 melt 为溶剂， 生成 Cobalt;terbium
  参考文献：
  名称：

  Tb3Co化合物中的大可逆磁热效应

  摘要：

  在 Tb(3)Co 化合物中观察到大的可逆磁热效应。在 5 T 的磁场变化下，磁熵变的最大值 Delta S(M) 在 84 K 时为 -18 J kg(-1) K(-1)，相对冷却功率为 738 J kg(-1) ) 没有滞后损失。特别是，在 2 T 的低磁场变化下实现了大的可逆 Delta S(M)(max)，-8.5 J kg(-1) K(-1)。材料的磁各向异性和纹理极大地影响 Delta S(M)。大的可逆磁热效应（大的 Delta S(M) 和较高的相对冷却功率）表明 Tb(3)Co 可能是磁制冷的有希望的候选者。(C) 2008 美国物理研究所。

  DOI：

  10.1063/1.2939220

文献信息

• Enhanced survival of short-range magnetic correlations and frustrated interactions in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si0012.gif" overflow="scroll"><mml:msub><mml:mrow><mml:mi mathvariant="normal">R</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub><mml:mi mathvariant="normal">T</mml:mi></mml:math> intermetallics
  作者：N.V. Baranov、A.V. Proshkin、A.F. Gubkin、A. Cervellino、H. Michor、G. Hilscher、E.G. Gerasimov、G. Ehlers、M. Frontzek、A. Podlesnyak

  DOI：10.1016/j.jmmm.2012.01.021

  日期：2012.6

  diffraction measurements performed for Tbsub 3}Ni and Tbsub 3}Co. On the other hand, results from inelastic neutron scattering show that the low temperature magnetic excitations are strongly suppressed in both Tbsub 3}Co and Ersub 3}Co. It is suggested that the extended short-range magnetic correlations, which turn out to be an inherent feature of Rsub 3}T type compounds, are due to the layered crystal

  弹性和非弹性中子散射和磁化测量已被用于研究低于和高于磁有序温度的 Rsub 3}T 化合物（R=Gd、Er、Tb；T=Ni、Co）中磁态的特性。在反铁磁化合物 Gdsub 3}Ni 和 Tbsub 3}Ni 高于其磁有序温度时观察到的磁化曲线的明显非布里渊形状，以及早先报道的关于保留对总比热的磁贡献的数据Gdsub 3}T 和高于磁有序温度的电阻率的异常行为归因于顺磁态在宽温度范围内短程磁相关的存在。通过对 Tbsub 3}Ni 和 Tbsub 3}Co 进行的粉末中子衍射测量，已经揭示了短程磁有序的持续性直至温度高于 Neel 温度的 5-6 倍。另一方面，非弹性中子散射的结果表明，低温磁激发在 Tbsub 3}Co 和 Ersub 3}Co 中均受到强烈抑制。这表明扩展的短程磁相关性是 Rsub 3}T 型化合物的固有特征，是由于层状晶体结构和几何受挫层内交换之间的差异更多»相互作用和层间交换。«
• The isothermal section of Tb–Dy–Co ternary system at 773K and magnetic property of (Tb1−xDyx)Co2 alloys
  作者：X. Chen、Y.H. Zhuang、J.L. Yan、F. Fei

  DOI：10.1016/j.jallcom.2008.12.137

  日期：2009.6

  The isothermal section of the phase diagram of the Tb-Dy-Co ternary system at 773 K was investigated by X-ray powder diffraction (XRD), differential thermal analysis (DTA) and scanning electron microscope (SEM). The result shows that this section consists of 9 single-phase regions and 8 two-phase regions, and no three-phase region. The compounds Tb2Co17 and Dy2Co17, Tb2Co7 and Dy2Co7, TbCo3 and DyCo3, TbCo2 and DyCo2, Tb4Co3 and Dy4Co3, Tb12Co7 and Dy12Co7. Tb3Co and Dy-3 CO form a continuous series of solid solutions. The single phases Th and Dy also form a continuous solid solution. The binary compounds TbCo5 and DyCo5 were not observed at 773 K. No ternary compound was found. In addition, we experimentally determined the vertical section of pseudobinary system and magnetic property of Tb1-xDyxCo2 (x from 0 to 1) series alloys, T-c decreases and the maximum magnetic entropy change |Delta S-M.max| increases with the increase of Dy content. The Arrott plots and the change of |Delta S-M.max| show that magnetic phase transition from second-order to first-order occurs with the increase of Dy content between x = 0.6 and 0.8. (C) 2009 Published by Elsevier B.V.
• The 500°C isothermal section of the Gd–Tb–Co ternary system
  作者：K.W. Zhou、Y.H. Zhuang、J.Q. Li、Q.M. Zhu、J.Q. Deng

  DOI：10.1016/j.jallcom.2005.11.062

  日期：2006.9

  The isothermal section of the phase diagram of the Gd-Tb-Co ternary system at 500 degrees C was investigated by X-ray powder diffraction, differential thermal analysis and metallographic analysis techniques. In this isothermal section, there are nine single-phase regions, eight two-phase regions and none three-phase region. No ternary compound was found. The compounds Gd2Co17 and Th2Co17, Gd2Co7 and Tb2Co7, GdCo3 and TbCo3, GdCo2 and TbCo2, Gd4Co3 and Tb4Co3, Gd12Co7 and Tb12Co7, Gd3Co and Tb3Co, Gd and Tb form a continuous series of solid solutions. In addition, we experimentally determined the vertical section of pseudobinary system and the Curie temperature of Gd1-xTbxCo2 (x from 0 to 1) series alloys. (c) 2005 Elsevier B.V. All rights reserved.
• Specific heat of the R3Co (R = heavy rare earth or Y) compounds
  作者：N. V. Tristan、K. Nenkov、T. Palewski、K. P. Skokov、S. A. Nikitin

  DOI：10.1002/pssa.200306418

  日期：2003.3

  Specific heat measurements were performed in wide temperature range T = 2-300 K for the R3Co (R = Er-Gd, Y) compounds. Using values of the Sommerfeld coefficient and Debye temperature estimated for Y3Co compound, the Debye temperatures, phonon and conduction electron contributions as well as magnetic contribution to the specific heat were estimated for all other R3Co compounds.
• Andreyev; Baranov; Okhmyanin, Physics of Metals and Metallography, 1986, vol. 62, # 3, p. 56 - 63
  作者：Andreyev、Baranov、Okhmyanin、Veryagin、Zadvorkin、Kvashnin、Kelarev、Sinitsyn

  DOI：——

  日期：——