Establishment of crystal phase analysis method for bulk materials by synchrotron radiation X-ray diffraction

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K15035
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 26020:Inorganic materials and properties-related
• Research Institution: Japan Synchrotron Radiation Research Institute
• Principal Investigator: Kobayashi Shintaro 公益財団法人高輝度光科学研究センター, 回折・散乱推進室, テニュアトラック研究員 (10771892)
• Project Period (FY): 2020-04-01 – 2022-03-31
• Keywords: 構造解析 / 無機材料 / 放射光X線

Outline of Final Research Achievements

The objective of this research is the establishment of a method for high-precision analysis of crystalline phases using bulk materials. The goals are (1) the development of a measurement method that takes advantage of using bulk materials, (2) the establishment of an analysis method that reduces the contribution of coarse crystal grains in bulk materials to improve the analysis reliability. The results are as follows. (1) Development and improvement of fixing jigs of the bulk material, which enables sample heating and diffraction measurements without direct contact between the quartz capillary and the samples at the measurement position, (2) Acquisition of a large amount of 2D diffraction data, and statistical processing of the target data. As a result, the effect of coarse grains was successfully mitigated by performing statistical processing on the target data.

Free Research Field

無機材料

Academic Significance and Societal Importance of the Research Achievements

本研究ではバルク材料を用いた放射光XRDによる、高精度な結晶相解析を行う手法の開発を行った。材料生成プロセスの理解や、実応用材料の機能特性の理解のためには、バルク材料を用いた結晶相の高精度な評価が必要であり、高精度な解析が可能になれば機能性材料の高効率な開発に資する情報を与えうる。他にも、粉末化すると特性が変化する結晶相の高精度な結晶構造解析が可能となる。本研究では、1軸回転と試料の並進移動を組み合わせた2次元XRDデータの取得を中心として推進したが、ガンドルフィカメラ法のような、多軸回転とデータ処理を組み合わせることで、高精度なバルク材料の結晶相解析が可能となることが期待される。