期刊
CRYSTALS
卷 9, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/cryst9080390
关键词
solution crystal growth; mixed crystals; isomorphous replacement; mechanism of stress relaxation; optical filters; solar-blind technology
资金
- Russian Science Foundation [15-12-00030]
- Ministry of Science and Higher Education within the State assignment FSRC Crystallography and Photonics RAS
- Russian Science Foundation [18-12-16007] Funding Source: Russian Science Foundation
This review, for the first time, summarizes the results of studies of the defect formation mechanisms in mixed crystals grown from aqueous solutions. The general mechanism of interaction of a crystal with a foreign solution is described (reaction of isomorphous replacement). As a result of this reaction, the crystal surface turns into a mosaic of local areas where multidirectional processes (dissolution and growth) occur simultaneously. Data on mosaic microinhomogeneity, which is a new type of composition inhomogeneity inherent solely to multicomponent crystals, is presented. A new mechanism for the mismatch stress relaxation in heterocompositions of brittle crystals grown from low-temperature solutions is described; in this case, the formation of misfit dislocations is impossible and stress relaxation occurs due to the formation of numerous inclusions at the interface. The general concept of growing high-quality mixed crystals from solutions is described, using the example of K-2(Co, Ni)(SO)(2) center dot 6H(2)O (KCNSH) mixed crystals.
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