Accession Number : AD0618038

Title :   ON THE ANISOTROPY OF EXCHANGE IN YTTERBIUM IRON GARNET.

Descriptive Note : Technical rept.,

Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA

Personal Author(s) : Levy,Peter M.

Report Date : JUL 1965

Pagination or Media Count : 1

Abstract : The exchange splittings of the lowest 2F5/2 and 2F7/2 doublets of Yb(3+) in YbIG are evaluated in terms of the exchange potential parameters as given in a previous article. The wave functions of White, and Hutchings and Wolf were used. A good four parameter fit of the experimental exchange splittings is obtained by adopting essentially zero values for the rare-earth-iron exchange interactions that take place through the nearest neighbor oxygen ions. The chief result of this analysis is that the rare-earth-iron exchange interaction takes place primarily through the next-nearest neighbor oxygens (2.43A); the nearest neighbor oxygens (2.37A) are comparatively inert. (Author)

Descriptors :   (*ION EXCHANGE, YTTERBIUM), (*ANISOTROPY, GARNET), (*GARNET, IRON), EXCHANGE REACTIONS, ATOMIC ENERGY LEVELS, CRYSTAL LATTICES, POTENTIAL THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE