HARADA Ginji, a member of the Inorganic Crystal Chemistry Laboratory (Wagada Laboratory) and a second-year doctoral student in the Applied Chemistry Program, Graduate School of Science and Technology, gave an oral presentation at the crystal science special session of the 37th Fall Meeting of the Ceramics Association of Japan held at the Higashiyama campus of Nagoya University in Aichi Prefecture from September 10 to 12, 2024 and received the Excellent Presentation Award.
In the Inorganic Crystal Chemistry Laboratory, research into inorganic crystal growth using solution reaction, material application, and new functional materials is being conducted. In particular, the Laboratory members have been working on the growth of perovskite oxynitride single crystals (crystals without grain boundaries and with well-ordered atoms), which is expected to be a high dielectric constant material.
In this study, HARADA grew single crystals of BaTaO2N, a kind of perovskite oxynitride. As a result of optimizing the conditions, he succeeded in growing plate-like single crystals with a side of about 1 mm, which is one of the largest perovskite oxynitrides in the world, by the NH3-assisted BaCl2 flux method. In addition, detailed research on the crystal growth mechanism, physical property evaluation of the single crystal, such as dielectric properties, and crystal structure analysis by single crystal XRD were carried out.
Society name: 37th Fall Meeting of the Ceramics Society of Japan
Session: Crystal science – New developments in crystal growth technology and materials research –
Presenters: HARADA Ginji and WAGATA Hajime
Title: BaTaO2N crystal growth by the NH3-assisted BaCl2 flux method and research on the crystal growth mechanism
