Heating element for heating a melt crucible in the production of gallium arsenide single crystals has a hollow body comprising first hollow cylindrical section and a second section

摘要

Heating element is formed as a casing-like hollow body (20) with an upper edge (21) and a lower edge (22). The hollow body comprises a first hollow cylindrical section (23) with a first cross-section and a second section (24) with a tapering cross-section to surround a base region of a melt crucible. A recess (29) extending from the upper edge up to the start of the second section is provided and measured so that a current can be introduced for a second heating element. Preferred Features: The hollow body has a bell shape.