Aligned crystallization in glasses: An analysis of heat transport and interface kinetics

An analysis of heat flow effects which are significant in the development of aligned microstructures in thermally crystallizable glasses is presented. Microstructures developed by heat treatment of a representative glass composition in the CdGeAs system have been interpreted on the basis of a heat flow analysis model developed in this work. The utility and limitations of the current analysis in problems related to interfacial kinetics and microstructure evolution in directionally crystallized glasses are discussed.