PRESSURE DEPENDENCE OF ELASTIC CONSTANTS OF SINGLE CRYSTALLINE ALUMINUM OXIDE
PRESSURE DEPENDENCE OF ELASTIC CONSTANTS OF SINGLE CRYSTALLINE ALUMINUM OXIDE
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DOI：
10.1002/pssb.19680290113
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发表时间：
1968-01-01
期刊：
影响因子：
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通讯作者：
BARSCH, GR
中科院分区：
文献类型：
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作者：
GIESKE, JH;BARSCH, GR
用超声脉冲叠加法测定了氧化铝单晶的六个弹性常数，温度为25 °C，压力为10 kbar时，弹性常数随静水压的变化关系。在所有情况下，已发现的线性压力依赖性。结果进行了比较，发现同意近似与理论数据的六方密排结构与最近邻的中心力。它们也被用来计算的压力依赖的晶格参数从瑟斯顿的状态方程。与哈特和Drickamer的直接测量的实验数据的协议是优秀的一个，和穷人的其他晶格参数。
The six single crystal elastic constants of aluminum oxide have been measured by the ultrasonic pulse superposition method at 25 °C as a function of hydrostatic pressure up to 10 kbar. A linear pressure dependence has been found in all cases. The results are compared and found to agree approximately with theoretical data for the hexagonal close‐packed structure with nearest neighbor central forces. They are also used to calculate the pressure dependence of the lattice parameters from Thurston's equation of state. The agreement with directly measured experimental data of Hart and Drickamer is excellent for one, and poor for the other lattice parameter.