Gallium--holmium (1/1) | 12310-96-2

• 英文名称: Gallium--holmium (1/1)
• 英文别名: gallane;holmium
• CAS: 12310-96-2
• 化学式: GaHo
• 分子量: 234.653
• InChiKey: YMKULMHDWKLKGI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.18
• 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：

  氢化钬 、 氢化镓 以 neat (no solvent) 为溶剂， 生成 Gallium--holmium (1/1)
  参考文献：
  名称：

  Giant magnetocaloric effect in HoGa compound over a large temperature span

  摘要：

  We have studied experimentally the magnetic properties and magnetocaloric effect (MCE) in HoGa compound. Two subsequent magnetic transitions, a spin-reorientation (SR) transition followed by a ferromagnetic (FM)-paramagnetic (PM) transition, are observed at T-SR similar to 20 K and T-C similar to 69 K, respectively. Both transitions contribute greatly to the magnetic entropy change (Delta S-M), each yielding a significant peak on their Delta S-M-T curve. A considerable value of refrigerant capacity (RC) is obtained in HoGa, due to the large MCE over a wide temperature span. For a magnetic field change of 0-5 T, the maximal values of -Delta S-M are 17.1 J/kg K and 7.8 J/kg K at T-C and T-SR, respectively, and the RC reaches its maximal value of 455 J/kg in an optimal reversible refrigerant cycle with cold and hot sinks at T-cold similar to 16 K and T-hot similar to 99 K. Large reversible MCE and the giant value of RC indicate the potentiality of HoGa as a candidate magnetic refrigerant for nitrogen liquefaction. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.ssc.2009.10.023

文献信息

• The ternary Ho–V–Ga system at 750 °C, and new rare earth vanadium and chromium gallides
  作者：Yuriy Verbovytskyy

  DOI：10.1016/j.jallcom.2016.01.109

  日期：2016.5

  The ternary Ho–V–Ga phase diagram has been investigated at 750 °C by means of powder X–ray diffraction analysis and energy–dispersive X–ray spectroscopy. The studied system is characterized by the absence of detectable solubility for the binary compounds and by the existence of two new ternary phases, HoV 2 Ga 4 (YbMo 2 Al 4 structure type) and Ho 4 V 1– x Ga 12 (0 ≤ x 3 structure type). Isostructural

  摘要 通过粉末 X 射线衍射分析和能量色散 X 射线光谱法在 750 °C 下研究了三元 Ho-V-Ga 相图。所研究系统的特点是二元化合物没有可检测的溶解度，并且存在两个新的三元相，HoV 2 Ga 4（YbMo 2 Al 4 结构类型）和 Ho 4 V 1– x Ga 12（0 ≤ x 3 结构类型）。已发现 RE = Tb、Dy 和 Tm 的同构代表 REV 2 Ga 4 并确认 RE = Er。此外，还揭示了 RE = Gd-Tm 的新 RECr 4 Ga 8 相（与 ScFe 6 Ga 6 结构类型相关）的形成。已经简要讨论了 HoV 2 Ga 4 和 HoCr 4 Ga 8 化合物中原子的结构特性和相互作用。