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Real-time X-ray diffraction of metastable phases during solidification from the undercooled LuFeO$$_{3}$$ melt by two-dimensional detector at 1 kHz

過冷却LuFeO$$_{3}$$融体からの凝固における準安定相の2次元検出器による1kHzでの実時間X線回折

Kumar, M. V.*; 栗林 一彦*; 長汐 晃輔*; 石川 毅彦*; 岡田 純平*; Yu, J.*; 依田 眞一*; 片山 芳則

Kumar, M. V.*; Kuribayashi, Kazuhiko*; Nagashio, Kosuke*; Ishikawa, Takehiko*; Okada, Jumpei*; Yu, J.*; Yoda, Shinichi*; Katayama, Yoshinori

制御された酸素分圧$$P$$o$$_{2}$$下での過冷却LuFeO$$_{3}$$融体から形成される準安定相のその場観察による同定を、放射光光源におけるX線回折測定によって行った。1kHzの高速イメージングシステムによって、$$P$$o$$_{2}$$が1$$times$$10$$^{3}$$PaでのLu$$_{3}$$Fe$$_{2}$$O$$_{7}$$及びLuFe$$_{2}$$O$$_{4}$$相の単一リカレッセンス中のそれぞれの相の生成と成長を実時間で観察することができた。LuFeO$$_{3}$$系で観察された準安定相の回折パターンはLu-Fe-O系で報告されている準安定及び安定相のものと矛盾しない。

${it In-situ}$ identification of metastable phases formed from the undercooled LuFeO$$_{3}$$ melt under controlled oxygen partial pressure $$P$$o$$_{2}$$ was studied by X-ray diffraction measurements at a synchrotron radiation source. Real-time observation of the formation and growth of individual phases during the single recalescence of Lu$$_{3}$$Fe$$_{2}$$O$$_{7}$$ and LuFe$$_{2}$$O$$_{4}$$ phases at $$P$$o$$_{2}$$ of 1$$times$$10$$^{3}$$ Pa has been revealed by a high speed imaging system at 1 kHz. The obtained diffraction pattern of the metastable phase in the LuFeO$$_{3}$$ system was consistent with that of the metastable and stable phases reported in the Lu-Fe-O system.

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パーセンタイル:8.93

分野:Physics, Applied

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