Structural property of oxyhydrides

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K15661
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
• Research Institution: Institute for Molecular Science
• Principal Investigator: TAKEIRI Fumitaka 分子科学研究所, 物質分子科学研究領域, 助教 (20824080)
• Project Period (FY): 2019-04-01 – 2021-03-31
• Keywords: 酸水素化物 / ペロブスカイト

Outline of Final Research Achievements

In this study, we have studied structural properties such as dielectric property of oxyhydrides that contains H- anions with a (1s)2 electron configuration. AC impedance measurements were performed on perovskite-type AScO2H (A = Sr, Ba), yielding a relative permittivity of ~50 at 100-300K. We have also searched new compounds and succeeded to find oxyhydrides with layered structures.

Free Research Field

無機固体化学

Academic Significance and Societal Importance of the Research Achievements

水素の負イオンであるヒドリドを含む酸化物（酸水素化物）において、その誘電特性を中心とした構造物性の開拓に取り組んだ。ペロブスカイト型構造をとるAScO2H (A = Sr, Ba) の誘電率の測定に成功し、これはヒドリドを含む化合物では初である。本成果を出発点とし、今後のさらなる物質探索によって、チタン酸バリウムなどの既存の酸化物材料を凌駕する新物質の発見に繋げたい。