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Aggregation of Bismuth in NaCl Crystals
Author(s) -
Stoicescu Gh.,
Nistor S. V.,
Mateescu C. D.
Publication year - 1989
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221560204
Subject(s) - bismuth , vacancy defect , ion , irradiation , activation energy , materials science , atmosphere (unit) , dipole , crystallography , analytical chemistry (journal) , chemistry , metallurgy , physics , thermodynamics , nuclear physics , chromatography , organic chemistry
The aggregation of Bi 3+ —vacancy dipoles in NaCl single crystals grown in a reactive atmosphere is studied by monitoring the changes in the intensity of the C‐band attributed to Bi 3+ ions. An apparent third‐order reaction is observed to govern the aggregation process in the early stages, with an activation energy of 0.79 eV. No ESR signals attributed to Bi 2+ centres are observed before or after X‐irradiation at 77 or 300 K.