First sharp diffraction mapping for oxide glasses

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K14116
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Inorganic materials/Physical properties
• Research Institution: Tohoku University
• Principal Investigator: Hirata Akihiko 東北大学, 原子分子材料科学高等研究機構, 准教授 (90350488)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: ガラス / 局所構造 / 電子顕微鏡 / 電子回折

Outline of Final Research Achievements

We applied our angstrom-beam electron diffraction technique to oxide glasses or amorphous oxides and then characterized medium-range order structures based on so-called first sharp diffraction peaks. Consequently, we successfully obtained spatially-separated local structural information from the glassy samples. For amorphous SiO, we unveiled details of the disproportionated structure by constructing a model based on local structural information.

Free Research Field

非晶質科学