Synthesis of Novel Oxynitride With Derivate Perovskite Structure

Research Project

Project/Area Number	16K17877
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Inorganic chemistry
Research Institution	Kyoto University
Principal Investigator	Tassel Cedric 京都大学, 工学研究科, 准教授 (60597798)
Project Period (FY)	2016-04-01 – 2018-03-31
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000) Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords	Perovskite / Oxynitride / High-Pressure / 無機工業化学
Outline of Final Research Achievements	During this project we have investigated the synthesis and properties of LiNbO3-type and double perovskite structures. The materials were prepared using the high pressure and high temperature technique. While most oxynitrides have been prepared using precursor oxides at high temperature under ammonia flow, we have used the high pressure approach to yield less reducing conditions. We have studied ZnTaO2N crystal structure and properties which shows cationic disorder and centrosymmetry at room temperature while most oxides of the LiNbO3-type are usually ordered at this temperature. The crystal structure of La2MnTaO5N was also investigated and showed partial order of the anions in the structure. The magnetism of the structure has been investigated.