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Electron Spin Resonance of High‐Spin Co 2+ in Alkali Borate and Alkali Germanate Glasses
Author(s) -
Kojima Kazuo,
Yano Hirotsugu,
Matsuda Jiro
Publication year - 1990
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1990.tb05287.x
Subject(s) - germanate , alkali metal , electron paramagnetic resonance , boron , octahedron , chemistry , ion , spectral line , tetrahedron , spin (aerodynamics) , crystallography , materials science , inorganic chemistry , nuclear magnetic resonance , crystal structure , physics , organic chemistry , astronomy , thermodynamics
Electron spin resonance spectra of high‐spin Co 2+ doped in alkali borate and alkali germanate glasses have been measured at 4.2 K. For comparison, the corresponding spectrum in a 33K 2 O·67SiO 2 glass has also been measured. On the basis of the spectral line shape, the observed spectra, together with those in the literature, seem to be classified into four spectral types that represent Co 2+ ions in octahedral coordination, a mixture of some types of coordination, tetrahedral coordination with nearly axial symmetry, and distorted tetrahedral coordination.