Nickel;terbium | 12509-71-6

• 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: Nickel;terbium
• 英文别名: nickel;terbium
• CAS: 12509-71-6
• 化学式: Ni₅Tb
• 分子量: 452.375
• InChiKey: ZTSDAYXMLDYEGY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  6
• 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：

  nickel(II) oxide 、 terbium(III, IV) oxide 在 CaCl₂ 作用下， 以 melt 为溶剂， 生成 Nickel;terbium
  参考文献：
  名称：

  A direct electrochemical route from oxide precursors to the terbium–nickel intermetallic compound TbNi5

  摘要：

  Successful direct electrochemical reduction of mixed powders of terbium oxide (Tb4O7) and nickel oxide (NiO) to the intermetallic compound, TbNi5, is demonstrated in molten CaCl2 at 850 degrees C by constant voltage (2.4-3.2 V) electrolysis. The reduction mechanism was investigated by cyclic voltammetry using a molybdenum cavity electrode in conjunction with characterisations of the products from both constant voltage and potentiostatic electrolysis under different conditions by XRD, SEM and EDX. It was found that the reduction started from NiO to Ni, followed by that of Tb-2,O-3 (resulting from Tb4O7 decomposition) on the pre-formed Ni to form the intermetallic compound. The reduction speed increased with increasing the cell voltage, but the speed gain was counterbalanced by decreased current efficiency and increased electric energy consumption. At 2.4 V, the current efficiency reached 63.2%, and the energy consumption by electrolysis was as low as 3.2 kWh/kg TbNi5 when the oxide phase was converted fully to the metal phase (XRD) in 4 h. The oxygen level in the produced TbNi5 could readily reach 1800 ppm by electrolysis at 3.2 V for 12 h with the energy consumption being 18.9 kWh/kg TbNi5 (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.electacta.2006.03.019

文献信息

• Synthesis, crystal structure and magnetic properties of R11Ni60C6 (R = Tb, Dy) compounds
  作者：V. Levytskyi、O. Isnard、V. Babizhetskyy、B. Kotur

  DOI：10.1016/j.jpcs.2018.06.010

  日期：2018.11

  structure type, space group Im 3 ¯ m; for R = Tb: a = 12.50393 (6) A, for R = Dy: a = 12.49285 (6) A. New ternary carbide Tb11Ni60C6 displays ferromagnetic-like magnetic behavior at temperatures below TC = 6.6 K Dy11Ni60C6 also presents magnetic ordering at low temperature (TC = 4.8 K) indicating the absence of Ni magnetic moment. Evaluated effective magnetic moments correspond to respective values of

  摘要 采用电弧熔炼合成了两种富含金属的金属间碳化物 R11Ni60C6，然后在 800 °C 下热处理合金 6 个月。两种化合物的晶体结构都已使用粉末 XRD 进行了细化，包括原子坐标及其各向同性位移参数。R11Ni60C6指Yb11Ni60C6结构型，空间群Im 3¯m；对于 R = Tb：a = 12.50393 (6) A，对于 R = Dy：a = 12.49285 (6) A. 新的三元碳化物 Tb11Ni60C6 在低于 TC = 6.6 K 的温度下表现出类似铁磁性的磁性行为 Dy11Ni60C6 在低温下也表现出磁性有序温度 (TC = 4.8 K) 表明没有 Ni 磁矩。评估的有效磁矩对应于这些化合物中 R3+ 离子的各自值。
• The crystal structure and some thermodynamic properties of the - hydrogen system
  作者：Z Blazina、B Sorgic、A Drasner

  DOI：10.1088/0953-8984/9/15/003

  日期：1997.4.14

  ternary alloys crystallizing with the type of structure, do not show any significant hydrogen absorption. The entropy, the enthalpy, and the Gibbs free energy of formation have been extracted for the systems that exhibit an equilibrium plateau in the pressure - composition isotherms.

  对合金的结构研究表明，镍可以被铝代替，达到相同的成分。然而，二元化合物的六方晶体结构（类型，空间群 P6/mmm）仅存在于 ，而超出该组成的另一种六方结构（类型，空间群 P6/mmm）是稳定的。所有单相合金都暴露在压力高达 15 MPa 和温度介于 77 K 和 700 K 之间的氢气中。发现在上述条件下，只有具有该结构的三元合金与氢反应，从而吸收氢将晶胞体积增加多达 12.5%。还发现氢平衡压力随着铝含量的增加而降低，室温下的氢容量也是如此。二进制 , 并且以该结构类型结晶的三元合金没有表现出任何显着的吸氢。对于在压力-组成等温线中表现出平衡平台的系统，已经提取了熵、焓和形成的吉布斯自由能。
• The magnetism of at low fields
  作者：V M T S Barthem、E A M da Gama

  DOI：10.1088/0953-8984/9/36/009

  日期：1997.9.8

  Magnetic susceptibility and magnetization measurements were made on a polycrystalline sample of . The compound is ferromagnetic for at any applied magnetic field. For temperatures between and and magnetic fields smaller than a critical field , the compound is helimagnetic. When or , the anisotropy in the basal plane increases, and the compound becomes ferromagnetic.

  对 的多晶样品进行磁化率和磁化测量。该化合物在任何外加磁场下都是铁磁性的。对于小于临界场的磁场和磁场之间的温度，该化合物是螺旋磁性的。当 或 时，基面的各向异性增加，化合物变为铁磁性。
• Unusual magnetic phase transitions of TbNi5
  作者：Seongsu Lee、A.N. Pirogov、A.A. Podlesnyak、K. Prokeš、Yu.A. Dorofeef、A.E. Teplykh、I.P. Swainson、J.-G. Park

  DOI：10.1016/j.physb.2006.05.048

  日期：2006.11

  In order to understand the nature of magnetic transitions in intermetallic TbNi5 compound, we have performed high resolution powder and single crystal neutron diffraction studies. Powder diffraction patterns can be described by a superposition of a ferromagnet (k(1) = 0) and a transverse spin wave (k(2) approximate to 2 pi/c(0, 0, 0.018)). The single crystal experiments reveal two spontaneous magnetic transitions: one is a second-order transition at 24 K from a paramagnetic state to an incommensurate structure and another a first-order transition at 10 K from the incommensurate structure to a lock-in structure. At the low-temperature transition a large (similar to 15 K) thermal hysteresis is observed in the temperature dependence of the intensity of magnetic peaks. External magnetic fields destroy the modulated structure and induce a ferromagnetic state, which remains stable even after magnetic fields are switched off. (c) 2006 Elsevier B.V. All rights reserved.
• Magnetic, magnetocaloric and neutron diffraction studies on TbNi5−xMx (M=Co and Fe) compounds
  作者：Arabinda Haldar、I. Dhiman、A. Das、K.G. Suresh、A.K. Nigam

  DOI：10.1016/j.jallcom.2011.01.012

  日期：2011.3

  The effect of substitution of Co and Fe for Ni in TbNi5 on the structural, magnetic and magneto-thermal properties has been investigated. Considerable enhancement of Curie temperature is observed with Fe substitution, whereas the increase is nominal in the case of Co. Neutron diffraction measurements reveal the redistribution of moments and site preference of substitutional ions in Ni 2c and 3g sites. In TbNi4Fe, both Ni and Fe as well as Tb are found to carry moment while in the case of TbNi4Co, mainly Tb carries the moment. Magnetocaloric behavior has been investigated from the magnetization and the heat capacity measurements. The magnetic and magnetocaloric properties are found to be strongly correlated in these compounds. (C) 2011 Elsevier B.V. All rights reserved.