| Автор | M J Harris |
| Автор | E K H Salje |
| Дата выпуска | 1992-05-04 |
| dc.description | The alpha - beta , beta - gamma and gamma - delta transitions in Na<sub>2</sub>CO<sub>3</sub> are observed through frequency changes in the carbonate ion internal modes. The incommensurate phase shows particularly interesting behaviour, as the nu <sub>4</sub> mode splits into two components at the beta - gamma transition which represent edge singularities. As the temperature is lowered five other, weaker components appear as subsidiaries to the edge singularities. These are interpreted as representing commensurate domains in a multisoliton lattice. It is shown that by solving the sine-Gordon equation numerically it is possible to calculate theoretical lineshapes in good agreement with the experimental spectra, although at the moment this must necessarily be done using a physically unrealistic model. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The incommensurate phase of sodium carbonate: an infrared absorption study |
| Тип | paper |
| DOI | 10.1088/0953-8984/4/18/007 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 4 |
| Первая страница | 4399 |
| Последняя страница | 4408 |
| Аффилиация | M J Harris; Dept. of Earth Sci., Cambridge Univ., UK |
| Аффилиация | E K H Salje; Dept. of Earth Sci., Cambridge Univ., UK |
| Выпуск | 18 |
