Chloride Flux Growth of La2Ti2O7 Crystals and Subsequent Nitridation To Form LaTiO2N Crystals

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• 作者：Hajime Wagata ; Nobuyuki Zettsu ; Akiko Yamaguchi ; Hiromasa Nishikiori ; Kunio Yubuta ; Shuji Oishi ; Katsuya Teshima
• 刊名：Crystal Growth & Design
• 出版年：2015
• 出版时间：January 7, 2015
• 年：2015
• 卷：15
• 期：1
• 页码：124-128
• 全文大小：384K
• ISSN：1528-7505

文摘

Highly crystalline, platelike La₂Ti₂O₇ were grown from a NaCl flux, and LaTiO₂N crystals were obtained by subsequent nitridation under NH₃ flow. The TEM analysis indicated that the flux-grown platelike La₂Ti₂O₇ crystals are single-crystalline growing along the a axis. The shapes and sizes of the LaTiO₂N crystals were almost unchanged from the La₂Ti₂O₇ precursor. In addition, LaTiO₂N crystals remained single-crystalline with a porous nanostructure. The optical absorption edges of the La₂Ti₂O₇ and LaTiO₂N crystals were approximately 320 and 600 nm.