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Characterization of the Crystal Quality of Calcites by Electron Paramagnetic Resonance
Author(s) -
VassilikouDova A. B.
Publication year - 1993
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.2221780224
Subject(s) - electron paramagnetic resonance , calcite , impurity , crystal (programming language) , spectral line , anisotropy , paramagnetism , chemistry , characterization (materials science) , materials science , crystallography , nuclear magnetic resonance , mineralogy , condensed matter physics , optics , nanotechnology , physics , organic chemistry , astronomy , computer science , programming language
Abstract The linewidths B pp and anisotropies in the electron paramagnetic resonance spectra of Mn 2+ impurities are measured in calcite single crystals and used for the determination of the origin of line broadening. Two different mechanisms of broadening, structural and chemical, are distinguished. From the differing angular dependences of the observed linewidths, large differences in the crystal quality are inferred. The differences in quality are also apparent in the EPR spectra of powder calcites, but no information about the mechanisms can be obtained.