Cobalt--gadolinium (3/4) | 12398-15-1

• 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: Cobalt--gadolinium (3/4)
• 英文别名: cobalt;gadolinium
• CAS: 12398-15-1
• 化学式: Co₃Gd₄
• 分子量: 805.98
• InChiKey: WYZSPWASKXLBLO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  7
• 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：

  钴 、 氢化钆 以 melt 为溶剂， 生成 Cobalt--gadolinium (3/4)
  参考文献：
  名称：

  The isothermal section of the Gd–Dy–Co ternary system at 800K

  摘要：

  The isothermal section of the phase diagram of the Gd-Dy-Co ternary system at 800 K was investigated by X-ray powder diffraction (XRD), differential thermal analysis (DTA), optical microscopy and scanning electron microscopy (SEM) techniques. The result shows that this section consists of 9 single-phase regions and 9 two-phase regions, and 1 three-phase region. The compounds Gd2Co17 and Dy2Co17, Gd2Co7 and Dy2Co7, GdCo3 and DYCo3, GdCo2 and DYCo2, Gd12Co7 and Dy12Co7, Gd3Co and Dy3Co form a continuous series of solid solutions. In addition, the single phases alpha-Gd and alpha-Dy also form a continuous series of solid solution. The maximum solid solubility of Dy in Gd4Co3 is about 10.8 at.%. The binary compounds Dy4Co3, GdCo5 and DyCo5 were not observed at 800 K. No ternary compound was found. (c) 2006 Published by Elsevier B.V.

  DOI：

  10.1016/j.jallcom.2005.12.007

文献信息

• The isothermal section of the Gd–Dy–Co ternary system at 800K
  作者：Y.H. Zhuang、Q.M. Zhu、J.Q. Li、K.W. Zhou、J.Q. Deng、W. He

  DOI：10.1016/j.jallcom.2005.12.007

  日期：2006.9

  The isothermal section of the phase diagram of the Gd-Dy-Co ternary system at 800 K was investigated by X-ray powder diffraction (XRD), differential thermal analysis (DTA), optical microscopy and scanning electron microscopy (SEM) techniques. The result shows that this section consists of 9 single-phase regions and 9 two-phase regions, and 1 three-phase region. The compounds Gd2Co17 and Dy2Co17, Gd2Co7 and Dy2Co7, GdCo3 and DYCo3, GdCo2 and DYCo2, Gd12Co7 and Dy12Co7, Gd3Co and Dy3Co form a continuous series of solid solutions. In addition, the single phases alpha-Gd and alpha-Dy also form a continuous series of solid solution. The maximum solid solubility of Dy in Gd4Co3 is about 10.8 at.%. The binary compounds Dy4Co3, GdCo5 and DyCo5 were not observed at 800 K. No ternary compound was found. (c) 2006 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.
• Phase equilibrium of the Gd–Fe–Co system at 873K
  作者：Jinli Huang、Haichang Zhong、Xiuwen Xia、Wei He、Jinming Zhu、Jianqiu Deng、Yinghong Zhuang

  DOI：10.1016/j.jallcom.2008.03.065

  日期：2009.3

  Phase equilibrium of the ternary Gd-Fe-Co system at 873 K was investigated by using X-ray diffraction technique, electron probe microanalysis, metallographic analysis and differential thermal analysis. The 873 K isothermal section of the phase diagram of the Gd-Fe-Co ternary system consists of 11 single-phase regions, 16 two-phase regions and 6 three-phase regions. Three pairs of corresponding compounds of Gd-Co and Gd-Fe, i.e., Gd2Co17 and Gd2Fe17, GdCo3 and GdFe3, GdCo2 and GdFe2, form a continuous series of solid solution. The compound Gd2Co7-xFex was found to have a broad solubility range from 0 to 31 at.% Fe. The maximum solubility of Co in Gd6Fe23 is about 7 at.% Co. At 873 K, the maximum solubilities of Fe in Gd3Co and Gd4Co3 are about 3 and 1 at.% Fe, respectively. No ternary compound was found in all ternary alloy samples. (c) 2008 Published by Elsevier B.V.
• Spin reorientation transition in Gd4Co3
  作者：T.M. Seixas、J.M. Machado da Silva、T.P. Papageorgiou、H.F. Braun、G. Eska

  DOI：10.1016/j.physb.2004.08.023

  日期：2004.11

  The magnetic behaviour of a Gd4Co3 ferrimagnetic compound was studied through magnetic and electrical resistivity measurements in polycrystalline samples. Magnetic measurements results reveal, for the first time in this compound, the existence of a spin reorientation transition at a temperature of 163 K, resembling that found in pure Gd. The effects of the spin reorientation process were also detected in the temperature dependence of the electrical resistivity and, more clearly, in its temperature derivative. (C) 2004 Elsevier B.V. All rights reserved.
• Amorphous and crystallized (Gd4Co3)100−xBx alloys for magnetic refrigerants working in the vicinity of 200K
  作者：X.C. Zhong、B.B. Gao、Z.W. Liu、Z.G. Zheng、D.C. Zeng

  DOI：10.1016/j.jallcom.2012.11.086

  日期：2013.3

  Crystallized Gd4Co3 alloy has shown promising magnetocaloric properties resulting from two successive magnetic-entropy changes of the hexagonal phase. In this work, magnetic (Gd4Co3)(100) B-x(x) (x = 0, 5, 10 and 15) amorphous ribbons were prepared by melt spinning. The onset crystallization temperatures T-x for the alloys with x = 0, 5, 10 and 15 were found to be about 560, 565, 575 and 585 K, respectively. The Ho4Co3-type hexagonal phase was obtained for crystallized ribbons after annealing. All the amorphous and crystalline alloys order ferromagnetically and undergo the second-order transition at their Curie temperatures. Under an applied field change from 0 to 5 T, the maximum value of (-Delta S-M) for (Gd4Co3)(100) B-x(x) amorphous alloys increased from 6.7 to 7.8 J kg (1) K (1) with increasing B content. Large values of the refrigerant capacity (RC) were also obtained. For the crystallized alloys, the maximum value of (-Delta S-M) decreased to 6.2-6.4 J kg (1) K (1). Large magnetic entropy change and RC value, negligible coercive force and hysteresis, as well as high stability enable the (Gd4Co3)(100) B-x(x) amorphous alloys competitive candidates for the magnetic refrigeration materials working in the vicinity of 200 K. (C) 2012 Elsevier B. V. All rights reserved.