Premium
Antimony Centres in Potassium Halides
Author(s) -
Radhakrishna S.,
Karguppikar A. M.
Publication year - 1974
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.2220610236
Subject(s) - antimony , halide , potassium , vacancy defect , impurity , chemistry , conductivity , doping , alkali metal , divalent , electron paramagnetic resonance , inorganic chemistry , analytical chemistry (journal) , materials science , crystallography , nuclear magnetic resonance , physics , optoelectronics , organic chemistry , chromatography
Antimony doped potassium halide crystals give one optical absorption band at 205 nm in KCl, 215 nm in KBr, and 243 nm in KI at RT. These bands are ascribed to the divalent state of antimony. Correlated EPR studies show that the paramagnetic antimony (Sb 2+ ) state is associated with a vacancy in the second neighbour position. Experiments have also been performed on the conductivity and dielectric loss. The impurity–vacancy binding energy is found to be ≈ 0.30 eV in these crystals.