title: Single-exponential activation behavior behind the super-Arrhenius relaxations in glass-forming liquids.
abstract: The reported relaxation time for several typical glass-forming liquids was analyzed by using a kinetic model for liquids which invoked a new kind of atomic cooperativity--thermodynamic cooperativity. The broadly studied 'cooperative length' was recognized as the kinetic cooperativity. Both cooperativities were conveniently quantified from the measured relaxation data. A single-exponential activation behavior was uncovered behind the super-Arrhenius relaxations for the liquids investigated. Hence the mesostructure of these liquids and the atomic mechanism of the glass transition became clearer.
authors.affiliation: Institute of Materials Science and Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China. lwwang@lzu.edu.cn
authors.forename: Lianwen
authors.initials: L
authors.lastname: Wang
authors.forename: Jiangong
authors.initials: J
authors.lastname: Li
authors.forename: Hans-Jörg
authors.initials: HJ
authors.lastname: Fecht
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D005898:Glass / Q000737:chemistry*; D008956:Models, Chemical; D044367:Phase Transition; D012996:Solutions / Q000737:chemistry*
chemical_list: D012996:Solutions