INVESTIGATION OF EVAPORATION AND CONDENSATION MECHANISMS.
Abstract
Langmuir evaporation rates from (00.1) 'zinc' surfaces and (00.minus 1) 'oxygen' surfaces of ZnO single crystals have been determined by electromicrobalance experiments for temperatures between 900 degrees and 1300 degrees C. The theoretical evaluation of the evaporation mechanism of compounds of the type AB undergoing decomposition according to reaction 2 AB (arrow) 2 A + B2 was approached in two ways: (1) by an analysis of the various possible reaction paths, with a confining restriction imposed by the equilibrium condition, and (2) by taking into account in this analysis the limiting influence of the developing crystal morphology on the evaporation kinetics. Some general principles governing habit derivation were obtained in the course of a detailed study of the noncentrosymmetrical habit of the related chalcopyrite structure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1968
- Accession Number
- AD0682518
Entities
People
- A. A. Menna
- B. N. Das
- C. B. Lamport
- G. A. Wolff