Melting Point and Growth of Barium Telluride Single Crystals

摘要

A method is described for determining the melting point of a material by partially melting a long single crystal in a temperature gradient. The melting point of barium telluride was found to be 2070°±10°C. Single crystals of barium telluride were grown in graphite crucibles using a Bridgeman‐Stockbarger technique. A procedure for seeding the melt with a portion of a previously grown crystal is described. The lattice constant for barium telluride was found to vary, depending on the history of the sample, from a value of 7.000 Å for freshly prepared powder to as low as 6.950 Å for samples melted in an open crucible.