Crystal growth apparatus and method under vibration field

Abstract

The invention relates to a crystal growing device under a vibration field, and a growing method. The growing device comprises a furnace body (1), a driving mechanism (2), a sample ampoule (3), a vibration generator (4), a bracket (5), a driving rod (6) and a guiding rod (7); wherein, the furnace body (1) is placed vertically, the sample ampoule (3) vertically passes through the furnace body (1) and moves in the furnace body (1) along vertical directions, and the lower end of the sample ampoule (3) is fixedly installed on the vibration generator (4); the driving mechanism (2) is connected withthe furnace body (1) by the driving rod (6) and drives the furnace body (1) to move up and down along the axial direction; the furnace body (1) is sheathed and installed on the guiding rod (7) in a penetrating manner and moves up and down along the axial direction of the guiding rod (7), and the driving mechanism (2) and the guiding rod (7) are both installed on the fixing bracket (5). The deviceintroduces an axial externally-applied vibration field in the crystal growing process, which can effectively control the convection in melts, change the shape of a solid-liquid interface, and improvethe crystal quality and yield by searching for optimal processing parameters.

Description

technical field [0001] The invention relates to a crystal growth device and a growth method thereof under a vibrating field, belonging to the field of material science. Background technique [0002] Melt crystal growth is an important crystal growth technology and a major means of preparing high-quality semiconductor and laser dielectric crystals, and plays a pivotal role in modern science and technology applications. The crystal growth process is essentially a dynamic coupling effect of heat output, mass transport, and interface growth process, and this transport process is limited by the convective effect during the crystal growth process. [0003] In order to study the mechanism of crystal growth, improve the crystal growth process, improve the crystal quality, and apply the theory of hydrodynamics to the study of crystal growth, the research on the convective effect in the crystal growth process is quite active in recent years. [0004] Generally speaking, convection i...

AI Technical Summary

Problems solved by technology

However, due to the late start of the development of crystal growth technology under vibration field, the technology is still immature, and most of the researches are related to the progress of numerical simulation calculation, while the experimental research on crystal growth under vibration field is relatively few.

Images