バイカラーFe 添加スピネルの成長と評価

勝亦 徹; 小林 祐太; 坂田 陸; 小島 愛弥加; 人見 杏実; 渡邉 梨々花; 森 有沙; 相沢 宏明

doi:10.14915/gsj.46.0_4

2024 Annual Meeting

DOI https://doi.org/10.14915/gsj.46.0_4

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Host: The Gemmological Society of Japan

Abstracts of Lectures at 2024 Annual Meeting of the Gemmological Society of Japan

Growth and characteristics of bicolor Fe doped spinel

*Toru Katsumata, Yuta Kobayashi, Riku Sakata, Ayaka Kojima, Ami Hitomi, Ririka Watanabe, Arisa Mori, Hiroaki Aizawa

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Keywords: Iron doped spinel, crystal growth, color, optical absorption, photoluminescence

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Abstract

Bicolor Fe doped MgAl₂O₄ crystals have been grown using floating zone (FZ) technique by changing O₂ gas concentration during growth process. Crystals in various colors were grown from various Fe concentrations and compositions (x=MgO/Al₂O₃ molar ratio) under various O₂ concentrations.

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