Local structure of transition elements (V, Cr, Mn, Fe and Zn) in Al2SiO5 polymorphs
- Furukawa, Yuki
- Yoshiasa, Akira
- Arima, Hiroshi
- Okube, Maki
- Murai, Keiichiro
- Nishiyama, Tadao
- フルカワ, ユキ
- ヨシアサ, アキラ
- アリマ, ヒロシ
- オクベ, マキ
- ムライ, ケイイチロウ
- ニシヤマ, タダオ
- 古川, 由紀
- 吉朝, 朗
- 奥部, 真樹
- 西山, 忠男
Publication date
January 2007
DOI Publisher
American Institute of Physics ISSN
0094-243XAbstract
We measured XAFS spectra near the Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn K-edges in Al2SiO5 polymorphs to reveal the local structure around these elements in the minerals. XANES spectra show that the valence of Fe and Cr is different depending on the crystal structure and formation environments. The spectra of kyanite, a high pressure mineral, shift to high energy side. The Fe-O bond length of kyanite determined by EXAFS data analyses is the shortest of all samples
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