@article{oai:kumadai.repo.nii.ac.jp:00024815, author = {Ikeda, Masahiro and 安仁屋, 勝 and Ikeda, Masahiro and Aniya, Masaru}, issue = {10}, journal = {Intermetallics}, month = {Oct}, note = {application/pdf, 論文(Article), It is known that the structural relaxation in supercooled liquid and glassy metals exhibit a non-Debye type relaxation behavior and a VFT-like temperature dependence. Such behaviors are often characterized by the exponent of the Kohlrausch-Williams-Watts (KWW) function and by the value of the fragility. In the present work, a quantity NB which gives the number of structural units involved in the thermally activated viscous flow is introduced to characterize the bulk metallic glass-forming liquids. NB is defined from the Bond Strength - Coordination Number Fluctuation (BSCNF) model of the viscosity. It is shown that NB can be a new indicator that quantifies the degree of cooperativity within the bulk metallic glass-forming liquids. For several bulk metallic glass-forming liquids, it is shown that the characteristic temperature ratio T0/Tg, NB, and the stretched exponent βKWW are mutually correlated through the fragility index m derived from the BSCNF model., http://www.sciencedirect.com/science/article/pii/S0966979510000208}, pages = {1796--1799}, title = {Correlation between fragility and cooperativity in bulk metallic glass-forming liquids}, volume = {18}, year = {2010}, yomi = {池田, 昌弘 and イケダ, マサヒロ} }