Elastic constants of nonmetamict zirconium silicate
Elastic constants of nonmetamict zirconium silicate
复制标题
非偏晶硅酸锆的弹性常数
DOI：
10.1063/1.1663283
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发表时间：
1974
影响因子：
3.2
通讯作者：
J. C. Jamieson
中科院分区：
文献类型：
--
作者：
H. Ozkan;L. Cartz;J. C. Jamieson
文献中关于锆石（硅酸锆）弹性常数的两份独立报告存在一个数量级的分歧，并且报告时没有具体说明矿物学样本的条件。然而，天然锆石晶体经常含有铀和钍原子作为杂质，因此锆石可以以变晶（辐射损坏）状态存在。通过超声波脉冲叠加和相位比较方法，对晶格参数 ao = 6.606(2) A、co = 5.980(2) A 的小型合成晶体和非偏晶锆石高纯度天然单晶进行了弹性常数的重新测定。 1012 dyn/cm2 中的值为 c11 = 4.237、c33 = 4.900、c44 = 1.136、c66 = 0.485、c12 = 0.703 和 c13 = 1.495。 c11、c33、c44 和 c66 的测量不确定度估计为 0.4%，c12 和 c13 的测量不确定度为 3%。还对变晶锆石晶体（密度 4.531 g/cm3）进行了波速测量，结果表明......
Two independent reports in the literature for the elastic constants of zircon (zirconium silicate) are in disagreement by an order of magnitude and are reported without specifying the conditions of the mineralogical specimens. However, natural zircon crystals frequently contain uranium and thorium atoms as an impurity so that zircon can exist in a metamict (radiation damaged) condition. A redetermination of the elastic constants has been carried out on small synthetic crystals and on high‐purity natural single crystals of nonmetamict zircon of lattice parameters ao = 6.606(2) A, co = 5.980(2) A by ultrasonic pulse superposition and also by phase comparison methods. The values in 1012 dyn/cm2 are c11 = 4.237, c33 = 4.900, c44 = 1.136, c66 = 0.485, c12 = 0.703, and c13 = 1.495. The estimated uncertainty in the measurements are 0.4% for c11, c33, c44, and c66, and 3% for c12 and c13. Wave velocity measurements have also been carried out on a metamict zircon crystal (density 4.531 g/cm3) and it is shown that ...