Holmium--manganese (1/2) | 12029-79-7

• 分子结构分类: 无机化合物 - 均相金属化合物 - 金属间镧系化合物
• 英文名称: Holmium--manganese (1/2)
• 英文别名: holmium;manganese
• CAS: 12029-79-7
• 化学式: HoMn₂
• 分子量: 274.806
• InChiKey: ZGOFIYQATIUVJU-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--manganese (1/2) 、 氘 以 neat (no solvent) 为溶剂， 生成
  参考文献：
  名称：

  Magnetic and hydrogen ordering in the frustrated Laves hydridesRMn2H4.5(R=Y,Gd, Tb, Dy, Ho): A neutron-diffraction study

  摘要：

  We have studied the magnetic and crystal structures of different Laves hydrides RMn2H4.5 (R = Y, Gd, Tb, Dy, Ho), having the cubic C15 structure at high temperature. We observe a strong coupling between the hydrogen and magnetic order in the frustrated Mn sublattice. The Neel temperature coincides with the ordering temperature in the hydrogen sublattice, resulting in a single magnetostructural transition. In contrast to the RMn2 compounds, in the hydrides the Mn-Mn magnetic interaction dominates and it imposes the magnetic order in the rare-earth sublattice. On the other hand, the anisotropy of the rare-earth ion strongly influences the orientation of the magnetic moments at low temperature. The Laves hydrides show a very unusual case where the structural and magnetic orders strongly interact with each other. They also offer many examples of the interplay between the localized Mn moments and the rare-earth moments. [S0163-1829(99)13213-2].

  DOI：

  10.1103/physrevb.59.9324
• 作为产物：
  描述：

  氢化钬 、 锰 生成 Holmium--manganese (1/2)
  参考文献：
  名称：

  系统中磁序的中子衍射研究

  摘要：

  使用中子粉末衍射研究了铸态立​​方化合物的磁性和晶体结构。样品显示出显着的不均匀性并且由至少两个 C15 型晶相组成。在以 (96.3%) 为主的第一阶段，亚铁磁长程有序是稳定的。细胞参数位于 7.49-7.52 A 的窄范围内的第二阶段显示了不相称的磁结构，其波矢量弱依赖于 x。观察到反铁磁类型的短程相关性以及长程排序。漫反射最大值位于与具有半整数指数的布拉格反射相对应的位置，并且归因于基于在大小为 A 的簇内开发的 MnO 型反铁磁结构的短程相关性。

  DOI：

  10.1088/0953-8984/10/50/014

文献信息

• Neutron diffraction study of the magnetic ordering in the system
  作者：I S Dubenko、I V Golosovsky、A S Markosyan、I Mirebeau

  DOI：10.1088/0953-8984/10/50/014

  日期：1998.12.21

  The magnetic and crystal structure of the as-cast cubic compounds was studied using neutron powder diffraction. The samples showed substantial inhomogeneity and consisted of at least two C15-type crystal phases. In the first phase predominating in (96.3%) ferrimagnetic long range order is stable. The second phase with the cell parameter lying within the narrow range 7.49-7.52 A shows an incommensurate

  使用中子粉末衍射研究了铸态立​​方化合物的磁性和晶体结构。样品显示出显着的不均匀性并且由至少两个 C15 型晶相组成。在以 (96.3%) 为主的第一阶段，亚铁磁长程有序是稳定的。细胞参数位于 7.49-7.52 A 的窄范围内的第二阶段显示了不相称的磁结构，其波矢量弱依赖于 x。观察到反铁磁类型的短程相关性以及长程排序。漫反射最大值位于与具有半整数指数的布拉格反射相对应的位置，并且归因于基于在大小为 A 的簇内开发的 MnO 型反铁磁结构的短程相关性。
• Magnetic Characteristics of Laves Phase RMn₂ Compounds (R=Gd, Tb, Dy, Ho and Er)
  作者：Yoshikazu Makihara、Yoshikazu Andoh、Yuzo Hashimoto、Hironobu Fujii、Masahiro Hasuo、Tetsuhiko Okamoto

  DOI：10.1143/jpsj.52.629

  日期：1983.2
• NMR Study of Magnetic State of RMn₂Intermetallic Compounds. II. R=Heavy Rare-Earth
  作者：Kazuyoshi Yoshimura、Masayuki Shiga、Yoji Nakamura

  DOI：10.1143/jpsj.55.3585

  日期：1986.10.15
• Paramagnetic Properties of C15-Laves Phase RMn_<b>2</b>(<b><i>R</i>=<i>G</i><i>d</i></b>, Tb, Dy and Ho)
  作者：Kazuko Inoue、Hideto Imai

  DOI：10.1143/jpsj.66.224

  日期：1997.1.15

  The temperature dependence of magnetization and magnetic susceptibility of stable C15-Laves phase RMn(2) (R = Tb, Dy and Ho) has been measured from 77K to about 750K. It obeys the Curie-Weiss law. However, there is a change of the slope of inverse susceptibility near 400 similar to 500 K. The effective magnetic moments, especially those above the change of the slope, are nearly equal to g root J(J+1) of R(3+). The paramagnetic Curie temperatures at low temperatures are positive and change systematically with the lattice spacing, ascribed to the ferromagnetic RR interaction like those of C14-RMn(2). On the other hand, the paramagnetic Curie temperatures at high temperatures are negative. The temperature dependence of the susceptibility of C15-GdMn2 has also been measured and is discussed.
• Magnetic behavior of cubic laves phase RMn2 (rmR = Gd, DyandHo) compounds
  作者：S.K. Malik、W.E. Wallace

  DOI：10.1016/0304-8853(81)90095-0

  日期：1981.7