2026-03-10T03:25:34Z https://kumadai.repo.nii.ac.jp/oai

oai:kumadai.repo.nii.ac.jp:00029289 2023-08-18T04:11:04Z 448:449

A Study on the Correlation between Fragility and Cooperativity in Wide Class of Glass-forming Substances 安仁屋, 勝 Ikeda, Masahiro 池田, 昌弘 イケダ, マサヒロ Ikeda 池田 イケダ Masahiro 昌弘 マサヒロ Aniya, Masaru Ikeda, Masahiro 431 fragility cooperativity viscosity supercooled liquids glass forming materials bond stregth-coordination number fluctuation model application/pdf 論文(Article) The understanding of the cooperativity and heterogeneity in various kinds of glass forming liquids is a hot topic. In the present paper, the relationship between the cooperativity and the fragility has been studied based on the bond strength-coordination number fluctuation model. The model describes the temperature dependence of the viscosity of many kinds of glass forming liquids in terms of the mean values of the bond strength, coordination number and their fluctuations of the structural units that form the melt. According to the model, the cooperativity increases with the increase of fragility. The model indicates that the length scale of the cooperativity region in typical fragile systems is about 1 to 3 nm. http://www.sciencedirect.com/science/article/pii/S187538921300477X Elsevier 2013-09-06 eng journal article AM http://hdl.handle.net/2298/33501 https://kumadai.repo.nii.ac.jp/records/29289 10.1016/j.phpro.2013.07.019 18753892 Physics Procedia 48 113 119 https://kumadai.repo.nii.ac.jp/record/29289/files/PhysProcedia_48_113-119.pdf application/pdf 222.9 kB 2020-03-03