| Автор | I Tsatskis |
| Автор | E K H Salje |
| Автор | V Heine |
| Дата выпуска | 1994-12-12 |
| dc.description | The formation of kinetic, transient microstructures in structural phase transitions is analysed within the framework of time-dependent Landau-Ginzburg theories. The mesoscopic rate equation is delta phi / delta t= phi - phi 3+ delta 2 phi / delta x2- gamma delta <sup>2</sup> phi / delta x<sup>4</sup>+ delta delta <sup>6</sup> phi / delta x<sup>6</sup>. A front of a stable state phi =1 can grow into an unstable region with phi =0 in an oscillatory manner. It will then leave behind a transient domain structure with quasi-periodic walls. Such domain structures occur for positive and negative values of gamma with sufficiently large values of mod gamma mod . The phase diagram in ( gamma , delta ) space is explored using computer simulation. The repetition length does not diverge at the bifurcation between an oscillatory and solitonic regime except at the point gamma =1/12. delta =0 studied previously. It is shown that recent computer simulation studies of "realistic" microstructures used implicit values of gamma and delta close to the bifurcation condition. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Pattern formation during phase transitions: kinetics of partially conserved order parameters and the role of gradient energies |
| Тип | paper |
| DOI | 10.1088/0953-8984/6/50/012 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 6 |
| Первая страница | 11027 |
| Последняя страница | 11034 |
| Аффилиация | I Tsatskis; Dept. of Earth Sci., Cambridge Univ., UK |
| Аффилиация | E K H Salje; Dept. of Earth Sci., Cambridge Univ., UK |
| Аффилиация | V Heine; Dept. of Earth Sci., Cambridge Univ., UK |
| Выпуск | 50 |
