holmium iron | 12023-13-1

• 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: holmium iron
• 英文别名: Holmium;iron；holmium;iron
• CAS: 12023-13-1
• 化学式: Fe₂Ho
• 分子量: 276.624
• InChiKey: XTWSLXNKQSRMNQ-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：

  holmium iron 、 氘 以 neat (no solvent) 为溶剂， 生成
  参考文献：
  名称：

  Structural analysis for crystalline and amorphous RFe2D (R: Ho, Tb) by X-ray/neutron diffraction and reverse Monte Carlo modeling

  摘要：

  Atomic structures of crystalline (c-)HoFe2D3.6 and amorphous (a-)HoFe2D3.0 prepared by deuterium absorption of the C15 Laves phase compound HoFe2 were studied by X-ray and neutron diffraction techniques and these were compared with previous results for c- and a-TbFe2Dx. The structural parameters such as an interatomic distance and a coordination number are qualitatively in agreement with those for c- and a-TbFe2Dx. Namely, a marked difference was observed in the arrangement of metal atoms in a-HoFe2D3.0 compared to that in c-HoFe2D3.6 from interatomic distances and coordination numbers and there are clusters of Fe and Ho atoms in a-HoFe2Dx. RDF(r)s observed by the neutron diffraction indicated that the D atoms occupy tetrahedral sites consisting of 2Ho + 2Fe in c-HoFe2D3.6, while the D atoms occupy selectively tetrahedral sites consisting mainly of Ho atoms in a-HoFe2D3.0 because of strong affinity between D and Ho atoms.The reverse Monte Carlo (RMC) modeling method was employed to visualize a three-dimensional atomic arrangement by using combined X-ray and neuron diffraction data of RFe2Dx (R: Ho, Tb). Chemical fluctuation was visually observed in the RMC configurations. Moreover, it was found that about 40% of the D atoms occupy sites consisting of 4R. (C) 2004 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jallcom.2003.12.033
• 作为产物：
  描述：

  氢化钬 、 铁粉 以 melt 为溶剂， 生成 holmium iron
  参考文献：
  名称：

  REFe2 化合物电阻率的温度依赖性

  摘要：

  摘要 介绍了REFe 2 化合物（RE = Y、Ce、Gd、Tb、Dy、Ho、Er、Tm、Lu）在4 K 至1000 K 范围内电阻率的温度依赖性。CeFe 2 的突出特点还体现在热功率的温度依赖性上。对这些数据的分析表明，Fe 3 d 矩充当局部矩。这得到了对 YFe 2 和 LuFe 2 进行的能带结构计算的支持。

  DOI：

  10.1016/0038-1098(89)90013-6

文献信息

• Hydrogen-induced amorphization in C15 Laves phases RFe2
  作者：M. Dilixiati、K. Kanda、K. Ishikawa、K. Aoki

  DOI：10.1016/s0925-8388(01)01923-5

  日期：2002.5

  Abstract C15 Laves phases RFe2 (R=Y, Ce, Sm, Gd, Tb, Dy, Ho and Er) were thermally analyzed to elucidate the conditions of hydrogen-induced amorphization (HIA) using a pressure differential scanning calorimeter (PDSC) in a hydrogen atmosphere. Hydrogen absorption in the crystalline state, hydrogen-induced amorphization (HIA), precipitation of RH2 and decomposition of the remaining amorphous phase into

  摘要 C15 Laves 相 RFe2（R=Y、Ce、Sm、Gd、Tb、Dy、Ho 和 Er）通过使用压差扫描量热计 (PDSC) 的热分析阐明氢诱导非晶化 (HIA) 的条件。氢气氛。随着 RFe2 (R=Y, Sm, Gd, Tb, Dy 和 Ho)，虽然 YFe2 中的 HIA 发生在两个阶段。氢的吸收温度 (Ta) 和 RH2 的析出温度 (Tp) 几乎恒定且与 R 的原子序数无关，但 HIA (TH) 的温度随着原子序数的增加而升高。因此，CeFe2 中同时发生吸氢和 HIA，
• The standard enthalpies of formation of some binary intermetallic compounds of lanthanide–iron systems by high temperature direct synthesis calorimetry
  作者：S.V. Meschel、P. Nash、Q.N. Gao、J.C. Wang、Y. Du

  DOI：10.1016/j.jallcom.2012.11.035

  日期：2013.3

  formation of some binary and ternary shape memory alloys, which have established technological application, have also been measured. These are: Terfenol-D (−1.5 ± 3.1), Samfenol (−13.6 ± 3.1), Galfenol (−10.4 ± 2.8); Nd 2 Fe 14 B (−9.6 ± 3.2). The values are compared with predicted values of the semiempirical model of Miedema and Coworkers and with predictions by ab initio calculations. We will present

  摘要 通过高温直接合成量热法在 1373 ± 2 K 下测量了一些镧系元素-铁系金属间化合物的标准生成焓。 报告了以下以 kJ/mole 原子为单位的结果： Ce 2 Fe 17 (-1.6 ± 2.8); Pr 2 Fe 17 (-0.2 ± 3.0)；Nd 2 Fe 17 (-3.0 ± 2.7)；Sm 2 Fe 17 (-3.1 ± 3.2)；GdFe 2 (-2.4±3.0)；HoFe 2 (-2.6 ± 3.3)；ErFe 2 (-1.9 ± 3.0)；TmFe 2 (-2.2 ± 2.8)；LuFe 2 (-3.6 ± 3.1)。一些已确立技术应用的二元和三元形状记忆合金的标准形成焓也已被测量。它们是：Terfenol-D (-1.5 ± 3.1)、Samfenol (-13.6 ± 3.1)、Galfenol (-10.4 ± 2.8)；Nd 2 Fe 14 B (-9.6 ±
• Effects of rare-earth substitution in : mixed-valence and magnetic properties
  作者：C C Tang、Y X Li、J Du、G H Wu、W S Zhan

  DOI：10.1088/0953-8984/11/8/015

  日期：1999.3.1

  The lattice parameters and magnetic properties of (R = Ho, Er) have been investigated. The deviation of the lattice parameters from Vegard's law indicates that the Ce valence in both systems fluctuates with the concentration of the dopant R. This fluctuation is directly relevant to the degree of localization of Ce 4f electrons, and is independent of the atomic size of the dopant element. The observed

  已经研究了 (R = Ho, Er) 的晶格参数和磁性。晶格参数与 Vegard 定律的偏差表明，两个系统中的 Ce 价数都随着掺杂剂 R 的浓度而波动。这种波动与 Ce 4f 电子的局部化程度直接相关，并且与原子尺寸无关。掺杂元素。观察到的变磁跃迁已经从带图中的描述中进行了分析。Ce 从混合价态到局域态的价态波动增加了 Ce 和 Fe 离子的矩以及居里温度。混合价态的变化也会影响 Ce-Fe 耦合的性质。
• Temperature dependence of the electrical resistivity of REFe2 compounds
  作者：E. Gratz、E. Bauer、H. Nowotny、A.T. Burkov、M.V. Vedernikov

  DOI：10.1016/0038-1098(89)90013-6

  日期：1989.3

  Abstract The temperature dependence of the electrical resistivity of the REFe 2 compounds (RE = Y, Ce, Gd, Tb, Dy, Ho, Er, Tm, Lu) in the range from 4 K up to 1000 K are presented. The outstanding feature of CeFe 2 is also demonstrated by the temperature dependence of the thermo-power. The analysis of these data reveals that the Fe 3 d moments act as localized moments. This is supported by bandstructure

  摘要 介绍了REFe 2 化合物（RE = Y、Ce、Gd、Tb、Dy、Ho、Er、Tm、Lu）在4 K 至1000 K 范围内电阻率的温度依赖性。CeFe 2 的突出特点还体现在热功率的温度依赖性上。对这些数据的分析表明，Fe 3 d 矩充当局部矩。这得到了对 YFe 2 和 LuFe 2 进行的能带结构计算的支持。
• Isothermal section of the Ho–Co–Fe system at 773K
  作者：Wei He、Yunhong Zhao、Yongzhi Zhang、Meihua Yu、Lingmin Zeng

  DOI：10.1016/j.jallcom.2010.09.121

  日期：2011.1

  The 773 K isothermal section of the phase diagram of the Ho-Co-Fe ternary system was investigated by using X-ray diffraction technique, metallographic analysis and scanning electron microscopy with energy dispersive analysis. The isothermal section of the ternary system consists of 6 three-phase regions, 16 two-phase regions and 11 single-phase regions. Three pairs of corresponding compounds of Ho-Co and Ho-Fe systems, i.e., Ho(2)Co(17) and Ho(2)Fe(17), HoCo(3) and HoFe(3), HoCo(2) and HoFe(2), form a continuous series of solid solution. At 773 K the compound Ho(6)Fe(23-x)Co(x) was found to have a wide homogeneity range from 0 to 29 at.% Co. The maximum solid solubilities of Fe in Co, Ho(2)Co(7), Ho(12)Co(7) and Ho(3)Co were determined to be about 10, 9, 2 and 5 at.% Fe, respectively. The maximum solid solubility of Co in Fe is found to be 78 at.% Co. (C) 2010 Elsevier B.V. All rights reserved.