Abstract
To reveal the origin of coloration in Kasama celadon glazes, the valencies and local coordination structures of Fe in the celadon glaze specimens were evaluated by X-ray absorption fine structure measurements. Specimens were fabricated by a heating-cooling process [oxidation-oxidation (OFOF), reduction–oxidation (RFOF), or reduction-reduction (RFRF)], and exhibited two colors (yellow: OFOF specimens, light blue: RFOF and RFRF specimens). Pre-edge features of their X-ray absorption near edge structure spectra were measured to investigate the valency and local coordination structures of Fe in each specimen. The yellow and light-blue colors originated from FeO4 tetrahedra with Fe in the +3 and +2 oxidation states, respectively.
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