| Автор | Hiroaki Fujita |
| Автор | Hiroki Fujimori |
| Автор | Masaharu Oguni |
| Дата выпуска | 1996-12-02 |
| dc.description | Heat capacities and spontaneous heat evolution/absorption effects in solid solution systems between dibenzofuran and fluorene were measured with an adiabatic calorimeter. Glass transitions due to freezing-in of the reorientational motion of molecules in the stable crystalline state were observed throughout the composition range. The enthalpy relaxation processes associated with the transition were precisely tracked around 300 K by the temperature jump method under adiabatic conditions. The processes exhibited a non-exponential character and the non-exponentiality characterized by the parameter of a stretched exponential function was found to increase as the sample became impure with doping of the second component into the pure substance. The relaxation function was, meanwhile, found to show a linearity against the magnitude of the temperature jump. Both the non-exponential and the linear characters were interpreted on the basis of computer simulation experiments as being due to the presence of the distribution of activation energies for the reorientation of molecules. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Non-exponential and linear characters of the irreversible enthalpy relaxation functions in dibenzofuran - fluorene solid solution systems and their interpretation |
| Тип | paper |
| DOI | 10.1088/0953-8984/8/49/020 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 8 |
| Первая страница | 10293 |
| Последняя страница | 10306 |
| Аффилиация | Hiroaki Fujita; Department of Chemistry, Faculty of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152, Japan |
| Аффилиация | Hiroki Fujimori; Department of Chemistry, Faculty of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152, Japan |
| Аффилиация | Masaharu Oguni; Department of Chemistry, Faculty of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152, Japan |
| Выпуск | 49 |
