Evaluation of valencies and local coordination structures of Fe in Kasama celadon glazes

Hitoshi Ojima; Takeshi Matsukawa; Yuuji Sogabe; Hirokazu Yoshida; Osamu Fukuoka; Chie Tsukada; Toshiki Hirotomo; Nobuyuki Sugiyama; Tetsuo Honma; Toru Ishigaki

doi:10.2109/jcersj2.21162

Notes

Evaluation of valencies and local coordination structures of Fe in Kasama celadon glazes

Hitoshi Ojima, Takeshi Matsukawa, Yuuji Sogabe, Hirokazu Yoshida, Osamu Fukuoka, Chie Tsukada, Toshiki Hirotomo, Nobuyuki Sugiyama, Tetsuo Honma, Toru Ishigaki

著者情報

キーワード: Kasama ceramic art, Celadon glaze, X-ray absorption fine structure, Pre-edge X-ray absorption near edge structure spectrum, Coloration, Fe valency, Local coordination structure

ジャーナルオープンアクセス

2022 年 130 巻 3 号 p. 290-293

DOI https://doi.org/10.2109/jcersj2.21162

詳細

抄録

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.

責任著者(Corresponding author)

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