Other

Forschungszentrum Julich Gmbh

Klaus Sonnenberg

Berndt Weinert

Tilo Flade

Eckhard K&uuml;ssel

Thomas B&uuml;nger

Eckhard Kussel

Martin Althaus

A device is made available for producing monocrystals, for example large-diameter gallium arsenide monocrystals, that has a cylindrical heating appliance with a floor heater ( ) and a cover heater ( ). The heating surfaces of the floor and the cover heater are considerably larger than the cross-sectional area of the monocrystal to be produced. In addition, an insulator ( ) is planned for the reaction space that is designed to prevent a radial heat flow and the guarantee a strictly axial heat flow over the complete height of the reaction space between the cover heater ( ) and the floor heater ( ).

Device for producing single crystals

In a method and an apparatus for producing monocrystals, in particular of gallium arsenide monocrystals, the crystal growth is carried out with a thermal shock resistant nucleus which is freely standing within a nucleus channel and the interspace in the nucleus channel between the nucleus and the crucible is filled with liquid boric oxide.

Method and apparatus for producing monocrystals

Method of and apparatus for obtaining fissure-free crystals

Growing community of inventors

Niederzier, Germany

Klaus Sonnenberg