Experimental determination of the growth rate anisotropy of garnets
Experimental determination of the growth rate anisotropy of garnets
复制标题
石榴石生长速率各向异性的实验测定
DOI：
10.1002/pssa.2210570211
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
P. Görnert
中科院分区：
文献类型：
--
作者：
R. Hergt;P. Görnert
在低过冷度情况下，在4π的全固相角范围内测量了典型气泡石榴石系统的生长速率与取向的关系。在<；100>；和<；211>；存在深奇异极小值，在<；321>；和<；100>；存在浅非奇异极小值。最大速率在<；111>；附近达到。得出了石榴石的平衡形式，并从石榴石F面的热粗化角度对结果进行了讨论。粗化温度由高到低依次为：{110}、{221}、{321}、{100}。当过冷度为18K时，{2 11}面上取向不良台阶的位移速度为0.1 8μm/S。
The orientational dependence of the growth rate of a typical bubble garnet system is measured in the whole solid angle range of 4π for the case of low undercooling. There are found deep singular minima at <100>and <211>and shallow nonsingular minima at <321>and <100>. The maximum rate is attained near <111>. Conclusions are drawn to the equilibrium form of garnets and the results are discussed in terms of thermal roughening of the garnet F‐faces. The sequence of the faces in the order of decreasing roughening temperature is {110}, {221}, {321}, {100}. The displacement velocity of misorientation steps on {211} faces is found to be 0.18 μm/s for 18 K undercooling.