rhodium-cerium | 12157-69-6

• 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: rhodium-cerium
• 英文别名: Cerium;rhodium；cerium;rhodium
• CAS: 12157-69-6
• 化学式: CeRh
• 分子量: 243.026
• InChiKey: TXYGXLCTNFFRHG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.0
• 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

• 作为反应物：
  描述：

  亚锑氢化物 、 rhodium-cerium 生成
  参考文献：
  名称：

  Effect of pressure on the size of energy gap in semiconducting mixed-valent rare-earth compounds

  摘要：

  We have synthesized CeRhBi and CeRhAs and found that these compounds crystallize in the epsilon-TiNiSi-type structure. It is found that CeRhBi is a heavy-fermion compound, whereas CeRhAs is a mixed-valent semiconductor with an energy gap of 144 K, about 10 times larger than that of CeRhSb. Various experimental results throughout the CeRhX series also vary in the sequence CeRh (Bi-Sb-As). However, the gap observed in CeRhAs is suppressed by external-pressure, suggesting that the chemical and the external pressure seem to cause opposite effects on the size of energy gap in these compounds. These results are compared with those for mixed-valent semiconductors Ce(3)Pt(3)Bi(4) and Ce(3)Pt(3)Sb(4).

  DOI：

  10.1016/0921-4526(96)00138-x
• 作为产物：
  描述：

  氢化铈 (CeH3) 、 铑 以 neat (no solvent) 为溶剂， 生成 rhodium-cerium
  参考文献：
  名称：

  Canepa, F.; Olcese, G. L.; Eggenhofer, R., Physica B: Condensed Matter

  摘要：

  DOI：

文献信息

• Hydrogen absorbing characteristics of R–M (R=La, Ce; M=Co, Rh, Ir, Ni, Pd, Pt) binary systems
  作者：J. Kadono、K. Hirano、S. Nishiuchi、R. Ariga、S. Yamamoto、T. Tanabe、H. Miyake

  DOI：10.1016/j.jallcom.2005.04.073

  日期：2006.2

  The capacity, rate and reversibility of the hydrogen absorbing/desorbing reaction have been measured for the binary systems composed of rare earth metal, R (La or Ce), and transition metal, M (Co, Rh, Ir, Ni, Pd or Pt), by Sieverts' method. These experimental results were discussed by comparing with the theoretical ones; density of states, cohesive energy and energy fluctuation, which were calculated by the extended Huckel method. Major results obtained are as follows. (1) The capacity of hydrogen absorption decreases almost linearly with increasing M components in R-M systems and it is explained in terms of the density of states. (2) The rate of hydrogen-absorbing reaction in La-M systems are larger than that of Ce-M systems. The larger absorption rate corresponds to the larger energy fluctuation. (3) The reversibility of the hydrogen absorbing/desorbing reaction is closely related with the cohesive energy of these systems. When the cohesive energy of the hydrogen absorbed system is large, a reverse (i.e. desorbing) reaction hardly occurs. (c) 2005 Elsevier B.V. All rights reserved.
• Surrounding effects on the valence behaviour of cerium in intermetallic compounds
  作者：F. Canepa、M. Minguzzi、G.L. Olcese

  DOI：10.1016/0304-8853(87)90675-5

  日期：1987.1
• Quantum critical phenomena of ferromagnetic
  作者：I. Kawasaki、K. Tenya、M. Yokoyama、H. Amitsuka

  DOI：10.1016/j.physb.2007.10.128

  日期：2008.4

  We have performed specific heat C and magnetic susceptibility chi measurements on the pseudo-binary alloys CePt1-xRhx, synthesized by mixing CePt (a ferromagnetic Kondo-lattice system) and CeRh (an intermediate valence system). As Rh is substituted for Pt, CePt1-xRhx shows a continuous change in the ground state from ferromagnetic order (T-C similar to 6K at x = 0) to a nonmagnetic valence-fluctuation state for x > 0.8. We found a non-Fermi-liquid-like behavior which is characterized by the power law T dependence of C(T) and chi(T), for a wide x range above the ferromagnetic quantum critical point (x(c)similar to 0.8). (C) 2007 Elsevier B.V. All rights reserved.
• Structural and Electronic Interplay in the Gap Formation in CeRhAs_1-<i>x</i>Sb_<i>x</i>(0 ≤<i>x</i>≤1)
  作者：Tetsuya Sasakawa、Hiroki Miyaoka、Kazunori Umeo、Shinobu Aoyagi、Kenichi Kato、Fumitoshi Iga、Toshiro Takabatake

  DOI：10.1143/jpsj.73.262

  日期：2004.1.15

  Both CeRhAs and CeRhSb are known to open a narrow pseudogap at the Fermi level. For the alloys CeRhAs1-xSbx (0 less than or equal to x less than or equal to 1), we report the magnetic, transport and x-ray diffraction measurements. For x = 0, the orthorhombic epsilon-TiNiSi-type crystal structure with a 2b x 2c superlattice changes to the hexagonal LiGaGe-type upon heating above 360K, thereby the Cc chain is straightened. The phase transitions disappear upon alloying at a small level x = 0.025, and alloys for 0.25 less than or equal to x less than or equal to 0.50 adopt the hexagonal YPtAs-type structure at room temperature. Over the wide range 0.025 less than or equal to x less than or equal to 0.94, no clear sign of gap is observed in either magnetic susceptibility, specific heat, resistivity or thermopower. The electronic specific heat coefficients for the end compounds at x = 0 and x = 1 are ten-fold increased by alloying at x = 0.025 and x = 0.94, respectively. These results indicate that not only the coherent hybridization of the 4f wave function with the conduction bands in the epsilon-TiNiSi-type structure but also the superlattice structure play important roles in the gap formation in CeRhAs.