manganese germanide | 12025-71-7

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 各种混合金属/非金属
• 英文名称: manganese germanide
• 英文别名: Germane--manganese (3/5)；germane;manganese
• CAS: 12025-71-7
• 化学式: Ge₃Mn₅
• 分子量: 492.46
• InChiKey: FYXKCPJKZPQCDZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -4.37
• 重原子数：
  8
• 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：

  锗烷 、 manganese germanide 以 neat (no solvent) 为溶剂， 生成
  参考文献：
  名称：

  外延Mn5Ge3和碳掺杂Mn5Ge3薄膜的热稳定性

  摘要：

  通过结合结构和磁性表征研究了外延 Mn5Ge3 和碳掺杂 Mn5Ge3 薄膜的热稳定性。结果表明，铁磁 Mn5Ge3 薄膜在 650°C 后退火后转变为反铁磁 Mn11Ge8，而碳掺杂的 Mn5Ge3 在高达 850°C 时仍保持其铁磁性。发现 Mn5Ge3 的磁性（居里温度、饱和磁化强度和每个 Mn 原子的磁矩）在碳掺杂和热退火过程中提取时发生可逆转变。碳掺杂的 Mn5Ge3 薄膜的稳定性将根据 Mn5Ge3 间隙位的碳填充来讨论，这防止了 Ge 从基板扩散。

  DOI：

  10.1063/1.3638472
• 作为产物：
  描述：

  锗烷 、 锰 以 melt 为溶剂， 生成 manganese germanide
  参考文献：
  名称：

  具有各向异性诱导自旋维度交叉的熔纺 Mn5−xFexGe3（x = 0 和 1）带材中的增强磁热效应

  摘要：

  我们报告了熔纺锰的结构、磁性、磁热和铁磁共振特性5-X铁XGe 3 (x = 0 和 1) 带状体。熔纺锰5锗3带材呈现六方结构，沿 c 轴优先生长，而 Fe 掺杂保留了该结构，但改变了面内方向的优先生长。Fe掺杂提高了Mn的铁磁到顺磁相变温度5锗3丝带。在关键区域进行精细的等温磁化数据分析，得出关键指数β=0.344(1),γ=1.284(1) 和δ=4.70(1) 临界温度 TC=303.64(1) K 当 x = 0 时β=0.389(1),γ=1.334(1) 和δ=4.441(1) 带 TC=330.84(1) K for x = 1。此外，T附近的磁化数据C满足二阶相变的磁标度状态方程。磁热性能通过最大熵变来体现-ΔS米米AX(T)～5.0(2.9) J·kg -1 K -1 ; 制冷剂容量 RC～505(302) J kg −1和温度平均熵 TEC(10 K)～对于 x = 0(1)

  DOI：

  10.1016/j.jmmm.2023.171309

文献信息

• Investigation of phase equilibria in the quaternary Ce–Mn–In–Ge system and isothermal sections of the boundary ternary systems at 800 °C
  作者：Anton O. Oliynyk、Kadar Djama-Kayad、Arthur Mar

  DOI：10.1016/j.jallcom.2014.10.170

  日期：2015.2

  Ce–Mn–Ge system deserves particular attention because the phase equilibria are complex. Relative to the previously reported phase diagram evaluated at a lower temperature (400 °C), three ternary phases (CeMn 2 Ge 2 , Ce 2 MnGe 6 , and CeMnGe) persist, Ce 2 MnGe 5 does not form, and two new phases with very close composition (Ce 3 Mn 2 Ge 3 and Ce 43 Mn 18 Ge 39 ) appear at 800 °C. Ce 3 Mn 2 Ge 3 (orthorhombic

  摘要 通过粉末 X 射线衍射和能量色散 X 射线分析检查了四元 Ce-Mn-In-Ge 相图的一部分。发现了两个新的四元（Ce 4 Mn 2 InGe 4 和Ce 2 Mn 2 InGe 2 ）和两个三元（Ce 3 Mn 2 Ge 3 和Ce 43 Mn 18 Ge 39 ）相。边界三元系统（Ce-Mn-In、Mn-In-Ge、Ce-In-Ge 和 Ce-Mn-Ge）的等温截面在 800 °C 下确定。其中，Ce-Mn-Ge 系统值得特别关注，因为相平衡是复杂的。相对于先前报道的在较低温度 (400 °C) 下评估的相图，三个三元相（CeMn 2 Ge 2 、Ce 2 MnGe 6 和 CeMnGe）仍然存在，Ce 2 MnGe 5 没有形成，两个新相与非常接近的成分（Ce 3 Mn 2 Ge 3 和Ce 43 Mn 18 Ge 39 ）出现在800 °C 时。Ce 3 Mn 2 Ge 3
• Magnetocaloric refrigerant with wide operating temperature range based on Mn5−Ge3(Co,Fe) composite
  作者：Yongdeok Kim、Ki Hoon Kang、Ju Hwan Kim、Eun Jeong Kim、Kwangseok Choi、Won Bae Han、Hee-Soo Kim、Yoong Oh、Chong Seung Yoon

  DOI：10.1016/j.jallcom.2015.05.061

  日期：2015.9

  The Curie temperature of Mn5Ge3 was raised or lowered by alloying the compound with Fe or Co; hence, the temperature at which maximum magnetocaloric effect manifested was easily manipulated by forming Mn5-xGe3(Co,Fe)(x), alloys to ultimately develop a composite magnetic refrigerant consisting of multiple Mn5Ge3 - based alloys. The composite refrigerant was designed to produce a table-like Delta S-M-T curve and to maximize the RC value near room temperature. Linear combination of the Delta S-M-T curves for the constituent materials showed that a composite composed of physical mixture of four different Mn5Ge3-based compounds: Mn5Ge3, Mn5.1Ge2.9, Mn4.75Co0.25Ge3 and Mn4.75Fe0.25Ge3, generated an optimal Delta S-M-T curve with a table-like shape. The composite refrigerant with refrigeration capacity of 52 J kg(-1), peak entropy change at 300 K, and operating temperature range of 45 K under Delta H = 10 kOe was suitable for room-temperature magnetic refrigeration. Moreover, by changing the relative fraction of each constituent material in the composite, it was shown that the operating temperature range could be fine-tuned as needed. The calculated Delta S-M-T curve for the composite refrigerant by linear combination reasonably well matched the experimental Delta S-M-Tcurve estimated from the M-H curves of the composite refrigerant, suggesting that the simple linear combination of the experimental Delta S-M-T curves can be used to predict the performance of the composite magnetic refrigerants whose MCE was originated from the second order magnetic transition. In conclusion, being rare-earth free and lacking thermal or magnetic hysteresis, the Mn5Ge3 - based composite can be a competitive candidate magnetic refrigerant material operating at room temperature in terms of both economy and reliability compared to the giant MCE materials such as Gd - based intermetallic compounds or Heusler alloys. (C) 2015 Elsevier B.V. All rights reserved.
• Inhomogeneous transition from the ferromagnetic state to the antiferromagnetic state in Mn₅(Ge_1-xSi_x)₃alloys: an NMR study
  作者：P Panissod、A Qachaou、G Kappel

  DOI：10.1088/0022-3719/17/32/014

  日期：1984.11.20
• Field dependence of magnetic entropy change in Mn5Ge3 near room temperature
  作者：Lalita、A. Rathi、Pardeep、Ajay Kumar Verma、B. Gahtori、Arvind Gautam、R.P. Pant、P.D. Babu、G.A. Basheed

  DOI：10.1016/j.jallcom.2021.159908

  日期：2021.9
• Mn 2p–3d soft X-ray magnetic circular dichroism study of Mn5Ge3
  作者：C. Hirai、H. Sato、A. Kimura、K. Yaji、K. Iori、M. Taniguchi、K. Hiraoka、T. Muro、A. Tanaka

  DOI：10.1016/j.physb.2004.06.048

  日期：2004.9

  We have investigated the Mn 3d electronic structure of Mn5Ge3 by means of the Mn 2p-3d soft X-ray absorption spectroscopy (XAS) and magnetic circular dichroism (XMCD) experiments. The spectra are similar to those of the itinerant ferromagnetic compound MnSb. The integrated intensity of the XMCD spectrum is almost zero, indicating that the orbital magnetic moment is negligible for the magnetism of the Mn5Ge3 compounds. The atomic multiplet calculations suggest the 3d(6) configuration for the Mn atoms at two inequivalent sites. (C) 2004 Elsevier B.V. All rights reserved.