Arrangement and method for manufacturing a crystal from a melt of a raw material and single crystal

US8652253B2 · kind B2 · utility

Assignee

• FREIBERGER COMPOUND MATERIALS GMBH · DE

Inventors

• Stefan Eichler · Dresden, DE
• Thomas Bünger · Neubukow, DE
• Michael Butter · Freiberg, DE
• Rico Rühmann · Bad Liebenzell, DE
• Max Scheffer-Czygan · Chemnitz, DE

Key dates

• Filing date: Jun 5, 2008
• Grant date: Feb 18, 2014
• Expiry date: Jul 18, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An arrangement for manufacturing a crystal of the melt of a raw material comprises: a furnace having a heating device with one or more heating elements, which are configured to generate a gradient temperature field directed along a first direction, a plurality of crucibles for receiving the melt, which are arranged within the gradient temperature field side by side, and a device for homogenizing the temperature field within a plane perpendicular to the first direction in the at least two crucibles. The arrangement further has a filling material inserted within a space between the crucibles wherein the filling shows an anisotropic heat conductivity. Additionally or alternatively, the arrangement may comprise a device for generating magnetic migration fields, both the filling material having the anisotropic heat conductivity and the device for generating magnetic migration fields being suited to compensate or prevent the formation of asymmetric phase interfaces upon freezing of the raw melt.