Isotopically pure ZnSe crystals grown from the vapor

摘要

For the study of iostope effects in ZnSe, ~(64)Zn and ~(68)Zn isotopes have been combined with ~(76)Se and ~(80)Se isotopes. Synthesis, purification and crystal growth were carried out via the vapor phase in the same seaed ampoule. The <1 1 1> directed growth was favored by repeated formation of twins. Rod-shaped crystals up to 8 mm in length were obtained from small quantities of source materials. The physical vapor transport in an argon atmosphere with a Zn reservoir has been studied quantitatively.