EVALUATION OF MORPHOLOGY-STABLE CRITICAL SIZE OF KNbO3 CRYSTALS

摘要：

@@ Skeletal form of KNbO3 crystals growing in Li2B4O7 solvent was in-situ observed at 900°C and it was found that shallow depression started to develop on the surface of KNbO3 crystals when the crystal size exceeded several micron, typically 7 micron.Based on the quantitative criterion derived by Chernov, the estimated critical size of KNbO3 crystals was 1 micron, which was consistent with the experimental measure ment. The kinetic coefficients, kcorner and kcr, in the criterion were experimentally obtained in the diffusive-convective and diffusive-advective flow states respectively.

机标关键词：critical size、measure ment、crystal size、form of

所属期刊栏目：22

分类号：O6(化学)

在线出版日期：2004-01-08（万方平台首次上网日期，不代表论文的发表时间）

页数：共1页

页码：163-163