简介：SkeletalformofKNbO3crystalsgrowinginLi2B4O7solventwasin-situobservedat900CanditwasfoundthatshallowdepressionstartedtodeveloponthesurfaceofKNbO3crystalswhenthecrystalsizeexceededseveralmicron,typically7micron.BasedonthequantitativecriterionderivedbyChernov,theestimatedcriticalsizeofKNbO3crystalswas1micron,whichwasconsistentwiththeexperimentalmeasurement.Thekineticcoefficients,kcerandkc,,inthecriterionwereexperimentallyobtainedinthediffusive-convectiveanddiffusive-advectiveflowstatesrespectively.
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