Open AccessSTABILITY ENERGY OF GROWTH-UNIT AND MORPHOLOGY OF SPHALERITE CRYSTALLITES
Author(s) -
Rulin Yuan,
Er-Wei Shi,
Buguo Wang,
Xia Chang-tai,
Wenjun Li,
Zhong Wei-Zhou
Publication year - 1997
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.46.2071
Subject(s) - sphalerite , wurtzite crystal structure , tetrahedron , materials science , crystallite , crystallography , crystal growth , ideal (ethics) , crystal (programming language) , crystal structure , zinc , chemistry , metallurgy , pyrite , computer science , philosophy , epistemology , programming language
The zinc-based compound crystals, which are composed of zinc-anion coordinate tetrahedrons have two kinds of structure:one is wurtzite and the other is sphalerite.In this article the formation process and the ideal morphology of the sphalerite crystals are studied by calculating the stability energy of the crystal growth unit on the basis of the model of anion coordination polyhedron.The favorable growth unit for the growth of the sphalerite crystal is the tetrahedron.Thus the ideal morphology of sphalerite crystals is tetrahedron.The growth rate of the positive polar plane is different from that of the negative polar plane.It is proved by the calculation that zincoxide crystals are impossible to exist in sphalerite,so are zincsulphide crystals in wurtzite.