초록 ▼

A method for producing crystals of materials is described. The method comprises providing a pressure-resistant body having a nucleus of a starting material being crystallized in the inside thereof. The nucleus is applied with an energy which is capable of passing through the pressure-resistant body

A method for producing crystals of materials is described. The method comprises providing a pressure-resistant body having a nucleus of a starting material being crystallized in the inside thereof. The nucleus is applied with an energy which is capable of passing through the pressure-resistant body and being absorbed by the starting material, by which the nucleus is heated and melts. The melt is then gradually cooled under pressure to form crystals of the material. A laser beam or high frequency induction heating technique is used for heating the nucleus.

대표청구항 ▼

A method for producing crystals of a material which comprises the steps of: (a) providing a starting solid material capable of absorbing a laser beam energy; (b) completely surrounding said solid material with a substantially spherical body transparent to the energy such that said starting solid mat

A method for producing crystals of a material which comprises the steps of: (a) providing a starting solid material capable of absorbing a laser beam energy; (b) completely surrounding said solid material with a substantially spherical body transparent to the energy such that said starting solid material is placed approximately at the center of said substantially spherical body as a nucleus; (c) applying the laser beam energy from outside of said substantially spherical body until said starting solid material is heated and melted whereby a high internal pressure is produced by thermal expansion of said starting solid material being melted and is imposed on the melt, said laser beam energy, when applied to a surface of said substantially spherical body in parallel beams, being focused on said starting solid material by said substantially spherical body to cause said starting solid material to be heated and melted; and (d) cooling the melt, thereby forming crystals different from the crystals of said starting solid material.