Abstract
ESR spectroscopy was used to study order/disorder phenomena in paramagnetically doped solids. The dehydration process of aluminium fluoride and oxide hydrates and aluminosilicates was examined by ESRin situ measurements as well as using thermoanalytically quenched samples. Two types of amorphous states of solids have been studied: inorganic glasses in the conventional sense and amorphous states of solids which have not passed the liquid state. The complete ESR fine structure pattern of Fe3+ ions is susceptible with respect to order/disorder processes of the actual host matrix. Dehydration processes bear some model character in this field. A quantitative description of the disorder effects on the Fe3+ ESR could be given on the basis of a complete spin Hamiltonian using distributions of the fourth order spin coupling parameters.
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Stösser, R., Scholz, G. ESR evidence of order/disorder transitions in solids caused by dehydration. Appl. Magn. Reson. 12, 167–181 (1997). https://doi.org/10.1007/BF03162184
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DOI: https://doi.org/10.1007/BF03162184