The processes of ion exchange in crystals of semiconducting compounds of A321B361 type and in crystals of ferroelectrics - niobate and lithium tantalate - were investigated with the aim of the development of both physical and technological principles of ion exchange in crystals to be further applied for integral optoelectronics and in the studies of fundamental properties of materials. As a result a physical model of ion exchange in monocrystals was built up. The rules and pecularities of ion exchange processes in crystals of the A321B361 type and in crystals of niobate and lithium tantalate were studied. A number of new ion exchange processes were suggested. The thermodynamic and diffusion-kinetic parameters of compounds of the A321B361 type and their hard solutions were determined. The production methods of wave-guide and photosensitive layers in crystals of the A321B361 type and in crystals of niobate and lithium tantalate were developed. The results obtained were introduced into the manufacturing of planar ion exchange lenses. The results may find their field of application in integral optics, optoelctronics, etcAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio
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