Engineering of crystallization of glasses using control of glass structure and induction of large stress

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K18233
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Inorganic materials/Physical properties
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Shinozaki Kenji 国立研究開発法人産業技術総合研究所, 無機機能材料研究部門, 研究員 (10723489)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: ガラス / 結晶化 / ガラスセラミックス / 応力誘起 / 格子欠陥 / ナノ結晶 / 蛍光 / 長残光

Outline of Final Research Achievements

This study was carried out to control precipitated crystalline phase, morphology and function by utilizing stress and defect induced by crystallization of glass or glass structure. For example, by synthesizing typical fluorescent crystals and afterglow crystals via the glass state, we succeeded in fluorescence shift and high temperature phase precipitation. In addition, based on the design of the glass structure, a novel borate-based BaF2 nanocrystallized glass was developed. By reducing the particle size of the nanocrystal to 8 nm, high transparency comparable to glass was obtained. In addition, excellent up-conversion characteristics were obtained due to low phonon energy of BaF2 by heat treatment crystallization.

Free Research Field

無機工業材料