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manganese monosilicide | 12626-89-0

中文名称
——
中文别名
——
英文名称
manganese monosilicide
英文别名
manganese silicide;Manganese monosilicide;manganese;silane
manganese monosilicide化学式
CAS
12626-89-0
化学式
MnSi
mdl
——
分子量
83.0235
InChiKey
WMFFUNWLTYCMTH-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    -1.45
  • 重原子数:
    2.0
  • 可旋转键数:
    0.0
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.0
  • 拓扑面积:
    0.0
  • 氢给体数:
    0.0
  • 氢受体数:
    0.0

反应信息

  • 作为反应物:
    描述:
    chromium silicidemanganese monosilicide 以 neat (no solvent) 为溶剂, 生成
    参考文献:
    名称:
    Studies of the incommensurate structures of B20 alloys
    摘要:
    The B20 structure is capable of supporting a long-range antiferromagnetic static spin density wave, and for transition metal silicides and germanides it has previously been found that the Neel temperatures, high field magnetizations and magnetic propagation vectors q all suggest a dependence on an electron concentration parameter. This relationship has yet to be confirmed. The present measurements from mixed alloys in the series CrSi/FeSi, CrSi/MnSi, CrSi/CoSi. MnSi/CoSi and CrGe/FeGe have extended the electron concentration range previously covered and the results support the suggested dependence. The q values are practically independent of temperature and the CrGe/FeGe display high Neel temperatures comparable with that of FeGe. (C) 1998 Elsevier Science B.V. All rights reserved.
    DOI:
    10.1016/s0304-8853(97)00277-1
  • 作为产物:
    描述:
    硅烷 在 Mn-ions 作用下, 生成 manganese monosilicide
    参考文献:
    名称:
    无定形中的近藤效应
    摘要:
    我们提供了金属 - 绝缘体过渡的金属侧上的一系列 a- 膜的电导率数据。在 T = 20 - 200 K 的温度范围内,确定了电子 - 电子相互作用和弱定域效应,后者的温度依赖性是由非弹性电子 - 电子散射引起的。在较低温度下,我们观察到从高 T 行为向更高电阻的偏差。这种效应归因于Mn自旋对传导电子的Kondo型s-d交换散射。
    DOI:
    10.1088/0953-8984/9/2/017
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文献信息

  • Mesostructure - thermoelectric properties relationships in V Mn1−Si1.74 (x = 0, 0.04) higher manganese silicides prepared by magnesiothermy
    作者:Sylvain Le Tonquesse、Vincent Dorcet、Loic Joanny、Valérie Demange、Carmelo Prestipino、Quansheng Guo、David Berthebaud、Takao Mori、Mathieu Pasturel
    DOI:10.1016/j.jallcom.2019.152577
    日期:2020.3
    described. The powder obtained by this innovative route is composed of well crystallized grains with sizes ranging from 20 to 500 nm and free from any MnSi precipitates. Mesostructured densified pellets with average grain sizes as small as 550 nm are obtained by spark plasma sintering (SPS). Detailed structural and microstructural characterization of the samples were realized at every stage of the process
    摘要 描述了通过相对快速、“低温”和高产率的镁还原工艺合成纯原始和钒掺杂的 MnSiγ (γ = 1.74) 粉末。通过这种创新途径获得的粉末由结晶良好的晶粒组成,晶粒尺寸范围为 20 至 500 nm,并且不含任何 MnSi 沉淀物。通过放电等离子烧结 (SPS) 获得平均晶粒尺寸小至 550 nm 的介观结构致密颗粒。在该过程的每个阶段都实现了样品的详细结构和微观结构表征,突出了高浓度的缺陷,例如 Nowotny 相的取向或间距异常、单个晶粒内的 γ 变化和位错。因此,与具有相似密度和 (V/)Mn/Si 化学计量比的常规合成(电弧熔化/SPS)样品相比,晶格热导率显着降低。这些材料的热电性能就其复杂的微观结构进行了讨论。
  • Influence of Stoichiometry and Aging at Operating Temperature on Thermoelectric Higher Manganese Silicides
    作者:Sylvain Le Tonquesse、Loic Joanny、Quansheng Guo、Erik Elkaim、Valérie Demange、David Berthebaud、Takao Mori、Mathieu Pasturel、Carmelo Prestipino
    DOI:10.1021/acs.chemmater.0c03714
    日期:2020.12.22
    Thermoelectric higher manganese silicides, MnSix, were synthesized by magnesioreduction followed by spark plasma sintering with different nominal compositions (x = 1.65, 1.74, and 1.80) and various postsynthesis annealing durations (0, 48, 96, and 336 h). The composite Nowotny chimney-ladder crystal structures of the resulting samples were investigated by synchrotron X-ray powder diffraction. The modulation vector component γ, generally considered corresponding to the stoichiometry (x) of the material, was accurately determined by Rietveld refinement using a (3 + 1)D superspace approach. Regardless of the initial nominal composition, all the samples have a similar γ ∼ 1.736 after 48 h of annealing at 900 K. This result suggests that MnSix, at a temperature of 900 K, is better described as a defined compound with x close to 1.736, rather than intermediate solid-solution phases with 1.725 < x < 1.75 as predicted by the commonly accepted phase diagram. At the fixed nominal composition MnSi1.74, γ increases significantly from 1.7313(2) to 1.7411(1) after 336 h of annealing, indicating that the thermal history influences the Si stoichiometry. The evolution of γ with time is concomitant with a power factor drop (−19%), attributed to a decrease in charge carrier concentration. The drop of the power factor, partially compensated by a decrease in thermal conductivity, results in a −12% reduction of the maximum figure-of-merit ZT, after prolonged annealing under realistic application conditions.
    通过镁还原和火花等离子烧结合成了热电高锰硅化物 MnSix,具有不同的标称成分(x = 1.65、1.74 和 1.80)和不同的合成后退火持续时间(0、48、96 和 336 小时)。同步辐射 X 射线粉末衍射研究了所得样品的复合诺沃特尼烟囱式晶体结构。调制矢量分量 γ 通常被认为与材料的化学计量 (x) 相对应,它是通过使用 (3 + 1)D 超空间方法的里特维尔德精炼精确确定的。这一结果表明,在 900 K 的温度下,MnSix 更适合描述为 x 接近 1.736 的确定化合物,而不是通常公认的相图所预测的 1.725 < x < 1.75 的中间固溶相。在固定的标称成分 MnSi1.74 下,γ 在退火 336 小时后从 1.7313(2) 显著增加到 1.7411(1),这表明热历史会影响硅的化学计量。γ随时间的变化伴随着功率因数的下降(-19%),这归因于电荷载流子浓度的降低。在实际应用条件下,经过长时间退火后,功率因数的下降部分被热导率的下降所补偿,导致最大功率因数 ZT 下降-12%。
  • Anisotropic correlations in higher manganese silicides
    作者:Nagendra S. Chauhan、Ichiro Ono、Kei Hayashi、Yuzuru Miyazaki
    DOI:10.1016/j.jallcom.2022.167983
    日期:2023.2
    Anisotropic correlations are vital for understanding the thermoelectric transport properties of higher manganese silicides (HMSs). In this work, we establish the implications of anisotropy on thermoelectric performance by examining the orientational variants in melt-grown single crystal and spark plasma sintered polycrystalline specimens of HMS. Single crystal specimen aligned perpendicular to the c-axis (i
    各向异性相关性对于了解高锰硅化物 (HMS) 的热电传输特性至关重要。在这项工作中,我们通过检查 HMS 的熔体生长单晶和放电等离子体烧结多晶样品的取向变化,确定了各向异性对热电性能的影响。垂直于c轴(即沿解理ab平面)排列的单晶样品表现出高导电性和导热性,而最大塞贝克系数在c中测量-轴方向。类似地,与单晶样品相比,多晶样品表现出减弱的各向异性,加权迁移率增强和热导率降低,从而导致相对更高的热电品质因数 ( zT )。发现特征性的 MnSi 条纹主要垂直于熔融生长的单晶中的c轴生长,而在烧结过程中通常观察到烧结多晶中的包晶分解,从而在合成的 HMS 晶体中产生固有的无序和调制的晶格结构。据观察,zT如果在不同方向上测量电荷和声子传输特性,则可能会错误地估计单晶和多晶 HMSs。这项研究为 HMS 的结构-性能关系提供了更新的见解,并表明在解决 HMS 晶体中普遍存在的各向异性行为和微观结构演化时需要更仔细地考虑。
  • Thermoelectric properties of higher manganese silicide consolidated by flash spark plasma sintering technique
    作者:Seongho Choi、Kazuya Kubo、Naoki Uchiyama、Tsunehiro Takeuchi
    DOI:10.1016/j.jallcom.2022.166104
    日期:2022.11
    investigated thermoelectric properties of higher manganese silicide obtained by the simultaneous use of ball milling and flash spark plasma sintering (FSPS) technique, and the results were compared those of the samples prepared with conventional spark plasma sintering (SPS). Despite the very short sintering process less than 50 s, FSPS samples reproduced well the crystallographic and thermoelectric properties
    我们研究了同时使用球磨和闪光放电等离子烧结 (FSPS) 技术获得的高硅化锰的热电性能,并将结果与​​传统放电等离子烧结 (SPS) 制备的样品进行了比较。尽管烧结过程非常短,不到 50 秒,但 FSPS 样品很好地再现了用长烧结时间(超过 3500 秒)制成的 SPS 样品的晶体学和热电性能。值得注意的是,FSPS 样品中的晶粒生长受到显着抑制,尽管它对传输特性的影响很小。
  • The crystal chemistry of ZrSi
    作者:Tyra C. Douglas、Matthew A. Davenport、Eslam M. Elbakry、Jared M. Allred
    DOI:10.1016/j.jssc.2022.123648
    日期:2022.12
    Reported is a revised crystal structure of β–ZrSi (TlI/CrB structure type), correcting the atomic position and bond distances. The Si–Si bond length has been modified substantially from 2.723(6) Å to 2.4411(8) Å. The β-ZrSi single crystals were grown from an arc-melted button, and were characterized using single crystal X-ray diffraction. A survey of the TlI/CrB structure type shows that changes to
    报告了修改后的β -ZrSi 晶体结构(TlI/CrB 结构类型),修正了原子位置和键距。Si-Si 键长已从 2.723(6) Å 大幅修改为 2.4411(8) Å。β -ZrSi 单晶由电弧熔化的纽扣生长,并使用单晶 X 射线衍射进行表征。对 TlI/CrB 结构类型的调查表明,更改命名法将很有用,将其分为四种化学上不同的亚型:TlI、CrB、CaSi 和 ThCo。β -ZrSi 是 CaSi 亚型的一个例子。α-ZrSi结晶成相关的FeB结构类型,这里也分为FeB、CeSi和YNi亚型。借助 Zintl 概念和线性松饼-锡轨道 (LMTO) 基础中的电子结构计算,电子计数对 CaSi 和 CeSi 亚型的相对相位稳定性的影响得以合理化。
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