Nickel;terbium | 12035-69-7

• 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: 12035-69-7
• 化学式: Ni₂Tb
• 分子量: 276.305
• InChiKey: WVNUETVOUKSYRD-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：

  Nickel;terbium 、 氘 以 solid 为溶剂， 生成
  参考文献：
  名称：

  Topological characterization of metallic glasses by neutron diffraction and RMC modeling

  摘要：

  TbFe2D3.8, TbNi2D2.4, CuZr2 and NiZr2 metallic glasses have been studied to elucidate the structural characteristics by taking advantage of neutron and X-ray diffraction and using the reverse Monte Carlo (RMC) modeling based on the diffraction data. Topologically, about 98% of D atoms occupy tetrahedral sites formed by metal atoms for TbFe2D3.8 and TbNi2D2.4 metallic glasses. The Volonoi analysis of the structure of CuZr2 and NiZr2 metallic glasses was carried out to elucidate the relationship between the stability of glassy state and the atomic configuration. The prismatic-like polyhedra dominate in NiZr2 metallic glass. In contrast, the icosahedron-like polyhedra faces are preferred for constructing the structure of CuZr2 metallic glass. (c) 2006 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.physb.2006.05.061
• 作为产物：
  描述：

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

  伪二元（Tb，Er）Ni 2固溶体的结构与热磁性能的相关性

  摘要：

  磁性和热力学性质，等温磁熵变ΔS mag在其中，根据the研究了多晶拟二元Tb 1-x Er x Ni 2（x = 0.25、0.5和0.75）固溶体替代ter，导致晶体结构发生变化。发现室温下的Tb 1-x Er x Ni 2固溶体具有C15 Laves相超结构，而不是母体化合物TbNi2和ErNi2典型的C15结构。此外，如磁测量所示，在Tb 1-x Er x Ni 2中用Er代替Tb导致伪二元化合物的有序温度降低，这对应于二阶铁磁体到顺磁体的磁性相变；在x = 0.25和x = 0.75的情况下，减小分别从29.0降低到13.6K。 利用热磁麦克斯韦关系并根据Landau相变理论，分析了等温磁性熵变化，估计该熵可表征拟二元化合物的磁热性质。磁性的Tb 0.75 Er 0.25 Ni 2，Tb 0.5 Er 0.5 Ni 2和Tb 0.25 Er 0.75 Ni 2的最大磁熵变达到6.6（12

  DOI：

  10.1016/j.jallcom.2020.157870

文献信息

• Role of lanthanum in modifying the magnetic state in RNi2 solid solutions with R = Tb, Dy, Ho
  作者：J. Ćwik、Y. Koshkid'ko、I. Tereshina、N. Kolchugina、K. Nenkov、A. Hackemer、J. Lyubina、T. Palewski、G.S. Burkhanov、M. Miller

  DOI：10.1016/j.jallcom.2015.07.014

  日期：2015.11

  Comparative analysis and generalization of the influence of La on the structural and magnetic properties of R1-xLaxNi2 (R = Tb, Dy, Ho) solid solutions is presented. All the studied R1-xLaxNi2 solid solutions solidify with the formation of a Laves-phase superstructure corresponding to the F (4) over bar 3m space group. The magnetic properties are dominated by rare earth interactions and the substitution of R atoms with La significantly modifies the magnetic behaviour of the R1-xLaxNi2 system. Replacing of magnetic R with the nonmagnetic La results in magnetic dilution leading to the weakening of exchange interactions and decrease of the ordering temperature. In the case of Tb1-xLaxNi2 and Dy1-xLaxNi2 the ferromagnetic properties are reduced as the lanthanum content increases to 80% and for Ho1-xLaxNi2 the ferromagnetic ordering is destroyed as the lanthanum content increases to the values above 80%. The magnetic transition in all the studied samples is of second order character. The Debye temperature, phonon and conduction electron contributions as well as a magnetic contribution to the heat capacity have been determined from heat capacity measurements. The magnetocaloric effect and the refrigerant cooling power for selected solid solutions was determined in magnetic fields up to 4.2 T. (C) 2015 Elsevier B.V. All rights reserved.
• Crystal field splitting observed in RNi2 compounds (R = Pr, Nd, Tb, Er, Ho, Tm) by means of inelastic neutron scattering
  作者：E.A. Goremychkin、I. Natkaniec、E. Mühle、O.D. Chistyakov

  DOI：10.1016/0304-8853(89)90229-1

  日期：1989.9
• Crystal field effects on polycrystalline (rare earth)Ni2 intermetallic compounds
  作者：M.R. Ibarra、J.I. Arnaudas、P.A. Algarabel、A. del Moral

  DOI：10.1016/0304-8853(84)90354-8

  日期：1984.12
• Vacancy motion in rare-earth-deficient<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>R</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ni</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>Laves phases observed by perturbed angular correlation spectroscopy
  作者：M. Forker、P. de La Presa、S. Müller、A. Lindbaum、E. Gratz

  DOI：10.1103/physrevb.70.014302

  日期：——

  Rare-earth-deficient R1-xNi2 Laves phases, which reportedly crystallize in a C15 superstructure with ordered R vacancies, have been investigated by perturbed angular correlation (PAC) measurements of electric quadrupole interactions at the site of the probe nucleus Cd-111. Although Cd-111 resides on the cubic R site, a strong axially symmetric quadrupole interaction (QI) with frequencies nu(q)approximate to265-275 MHz has been found in the paramagnetic phases of R1-xNi2 with R=Pr,Nd,Sm,Gd. This interaction is not observed for the heavy R constituents R=Tb,Dy,Ho,Er. The fraction of probe nuclei subject to the QI in R1-xNi2, R=Pr,Nd,Sm,Gd, decreases from 100% at low temperatures to zero at T>300 K and 500 K for R=Sm,Gd and R=Pr,Nd, respectively. At T=100 K the QI is static within the PAC time window, but at T=200 K fluctuations with correlation times tau(C)<10(-6) s, have been detected. These observations can be explained consistently by two assumptions: (i) the mother isotope In-111 of the PAC probe Cd-111 constitutes an attractive potential for vacancies and (ii) the R vacancies in R1-xNi2 are highly mobile at temperatures T<300 K, which is incompatible with a static vacancy superstructure. The measurements indicate a decrease of the vacancy-probe binding energy from the light to the heavy R constituents of R1-xNi2. For R=Pr,Nd,Sm,Gd the binding energy is in the range 0.15-0.40 eV. The activation energy E-A for vacancy jumps near the probe derived from the temperature dependence of the nuclear spin relaxation at 200 Kless than or equal toTless than or equal to300 K is small. The values observed in different samples cover a range of 0.1 eVless than or equal toE(A)less than or equal to0.23 eV. The trial frequency w(0) of these jumps appears to be correlated to the activation energy: ln w(0)(MHz)approximate to58E(A)(eV). At high temperatures T>500 K nuclear spin relaxation related to vacancy hopping is observed in nearly all R1-xNi2. Auxiliary Cd-111 PAC measurements have been carried in Sc0.95Ni2, ScNi2, ScNi0.97, Gd2Ni17, GdNi5, GdNi3, and GdNi.
• Magnetostriction of (rare earth) Ni2 intermetallic compounds
  作者：M.R. Ibarra、A. del Moral、J.S. Abell

  DOI：10.1016/0304-8853(84)90353-6

  日期：1984.12