The problems of Langasite single crystals growth and their solution

Abstract

The problems of Langasite single crystals growth by Czochralski and Bridgman methods were analyzed. It was found that the deferent kinds of defects in langasite crystals influence on physical properties and thus on langasite crystals application. Vernel method was first proposed for obtaining of qualitative single crystal charge from initial components. A monophase single crystal charge obtaining was confirmed by X-ray diffraction method. A single crystal with uniform composition was obtained by Czochralski method from this charge