Observation of laser calcination process for solid materials by scanning transmission soft X-ray microscopy

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K05279
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 28030:Nanomaterials-related
• Research Institution: Institute for Molecular Science
• Principal Investigator: Yuzawa Hayato 分子科学研究所, 極端紫外光研究施設, 技術職員 (30636212)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 軟X線顕微分光 / 赤外レーザー加熱 / 酸化物

Outline of Final Research Achievements

Electronic state observation of solid materials during the calcination process is importnat to obtain guidelines of material preparation in better quality. Scanning transmission soft X-ray microscope (STXM) is powerful tool to get the two dimentional distribution of electronic state in target sample. However, observation of heating samples is difficult because the optical system of STXM around the sample position is very crowded.
In this study, the stable measurement of heating was achieved by combining STXM and optical system of infrared laser. In addition, reduction process of Manganese(III) oxide is sucessfully ovserved.

Free Research Field

軟X線吸収分光

Academic Significance and Societal Importance of the Research Achievements

固体材料の調製における焼成処理は，材料の物性を左右する重要な段階である．しかし，焼成過程の空間分解観察は 焼成後の形状的な変化や格子構造の変化などで議論されることが多く，電子状態を空間分解観察した結果を材料設計に役立てるアプローチは少ない．したがって，今回の研究で行われた基礎的な測定で確立された手法は，今後測定試料の種類を増やしていくことによって多くの情報が得られることが期待できると考えている．