THE ELASTIC CONSTANTS OF SINGLE CRYSTAL Fe1-xO, MnO AND CoO, AND THE ELASTICITY OF STOICHIOMETRIC MAGNESIOWÜSTITE
THE ELASTIC CONSTANTS OF SINGLE CRYSTAL Fe1-xO, MnO AND CoO, AND THE ELASTICITY OF STOICHIOMETRIC MAGNESIOWÜSTITE
复制标题
单晶Fe1-xO、MnO和CoO的弹性常数及化学配比镁锰矿的弹性
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
W. Pluschkell
中科院分区：
文献类型：
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作者：
Y. Sumino;M. Kumazawa;O. Nishizawa;W. Pluschkell
用矩形平行六面体共振（RPR）方法测量了Fe_（1-x）O（x=0.08）、MnO和CoO单晶在30°C ~ Neel点TN（TN =-87 ° C（Fe_（0.92）O）、TN =-150 ° C（MnO）和TN =-16 °C（CoO））之间的弹性常数。在Fe 0.92O和MnO中，剪切常数C44（或CoO的Cs）在Neel温度及其附近显示出剧烈变化，而体积模量Ks和另一剪切常数Cs（或CoO的C44）即使在Neel点附近也继续显示出线性温度依赖性。Fe_（0.92）O中C_（44）的反常温度变化在室温以上持续存在。通过使用几个经验规则，化学计量的沃斯田石和镁沃斯田石的弹性性能进行了评估。室温下的弹性常数（Mbar）及其温度系数（kbar/deg）为：
Elastic constants of single-crystalline Fe1-xO (x=0.08), MnO and CoO have been measured by the rectangular parallelepiped resonance (RPR) method at temperatures between 30°C and Neel point TN (TN≅-87°C for Fe0.92O, ≅ -150°C for MnO and ≅16°C for CoO). In Fe0.92O and MnO, the shear constant C44 (or Cs for CoO) shows a drastic change at and around the Neel temperature, while the bulk modulus Ks and another shear constant Cs (or C44 for CoO) continue to show a linear temperature dependence even in the vicinity of the Neel point. The anomalous temperature variation of C44 in Fe0.92O persists above room temperatures. By using several empirical rules, the elastic properties of stoichiometric wustite and magnesiowustite are also evaluated. The elastic constants (Mbar) and their temperature coefficients (kbar/deg) at room temperature are: