[G] Melting and solidification process/High temperature process

[96] Nucleation-controlled Phase Selection in Rapid Solidification from Undercooled Melt of DyMnO₃

*Yoh HAYASAKA¹, Kazuhiko KURIBAYASHI², Shumpei OZAWA² (1. Chiba Inst Tech, 2. Chiba Inst Tech)

Keywords:phase selection、nucleatiom、undercooling、containerless processing、lanthanide manganite

六方晶LnMnO₃は強誘電性と反強磁性を併せ持つ機能材料である．DyMnO₃を過冷却凝固させると六方晶と斜方晶の2相が共存する．本研究ではこの共存理由が両相の核生成と相変態のどちらに律速するかを検討した．