| Автор | Xiaoqing Pan |
| Автор | H Gleiter |
| Автор | D Feng |
| Дата выпуска | 1990-03-19 |
| dc.description | The temperature evolution of discommensuration (DC) during the heating run through the commensurate-incommensurate (C-I) transition in barium sodium niobate is investigated by means of transmission electron microscopy. It is found that the interaction of DC is attractive over considerable distances, and that frozen-in DC become meandering and collide with each other in the process of reducing the DC density under the influence of thermal fluctuations at a temperature below the lock-in transition. A transient metastable state (or chaotic state) is observed with successive nucleation of DC in the early stages of transition, and later a wavy DC array is formed. DC loops with high density of DC are formed at a temperature above the C-I transition. A qualitative theoretical explanation of the observed characteristics on the evolution of DC is presented based on a Landau theory. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Dynamic evolution of discommensurations during the commensurate-incommensurate transition in barium sodium niobate |
| Тип | paper |
| DOI | 10.1088/0953-8984/2/11/007 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 2 |
| Первая страница | 2603 |
| Последняя страница | 2623 |
| Аффилиация | Xiaoqing Pan; Inst. of New Mater., Univ. of Saarland, Saarbrucken, West Germany |
| Аффилиация | H Gleiter; Inst. of New Mater., Univ. of Saarland, Saarbrucken, West Germany |
| Аффилиация | D Feng; Inst. of New Mater., Univ. of Saarland, Saarbrucken, West Germany |
| Выпуск | 11 |
