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Spectroscopic investigation of lattice vacancies in hexaborides
Author(s) -
Yahia Z.,
Turrell S.,
Mercurio J.P.,
Turrell G.
Publication year - 1993
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250240405
Subject(s) - microprobe , brillouin zone , raman spectroscopy , boron , lattice (music) , materials science , fourier transform , diffuse reflection , crystallography , analytical chemistry (journal) , molecular physics , chemistry , condensed matter physics , mineralogy , optics , physics , acoustics , organic chemistry , chromatography , quantum mechanics
Abstract Raman microprobe and diffuse‐reflectance Fourier transform IR spectra of a series of seven metal hexaborides show that the basic cubic symmetry of these systems is lowered owing to lattice vacancies. The resulting wave vector is oriented along the C 4 axis of the first Brillouin zone. Studies of enriched boron samples indicate that the vacancies in the B 6 structure are located at boron sites.