Accession Number : AD0634486

Title :   LOCAL ORDER FOR TERNARY MATERIALS IN A CRYSTAL.

Descriptive Note : Research and development rept. Jun 65-Jan 66,

Corporate Author : NAVY ELECTRONICS LAB SAN DIEGO CALIF

Personal Author(s) : CHRISTY, D. O.

Report Date : 09 MAR 1966

Pagination or Media Count : 71

Abstract : The coding technique for describing order in a binary material (Phys. Rev. v104 p350 1956) is extended to describe a ternary substitutional material. The coding is so constructed that in the limit as the third component becomes small, the ternary-order parameters approach the Warren-Cowley binary-order parameters. Bounding values developed for the various-order parameters result from geometrical considerations. The number of each kind of pairs must be non-negative. The Schwarz inequality technique must be applicable to the coding function. A simple scattering problem using the order parameters is presented. An experimental approach to measuring the order parameters is suggested. (Author)

Descriptors :   (*CRYSTAL LATTICES, MATHEMATICAL MODELS), (*ALLOYS, MATHEMATICAL MODELS), COMPUTER PROGRAMMING, ATOMS, STATISTICAL FUNCTIONS, SCATTERING, MATRICES(MATHEMATICS), QUANTUM STATISTICS

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE