| Автор | E K H Salje |
| Автор | M C Gallardo |
| Автор | J Jiménez |
| Автор | F J Romero |
| Автор | J del Cerro |
| Дата выпуска | 1998-06-29 |
| dc.description | The transition between the cubic and tetragonal phase in shows an excess specific heat of . Comparison between the temperature evolution of the excess entropy and the structural order parameter Q shows within experimental errors . The apparent order parameter exponent was confirmed and analysed using a Landau-type expression for the excess Gibbs free energy with A = 0.70 J , B = 31.22 J , C = 42.17 J , K and K. The closeness to the tricritical point is seen by B < C; all thermodynamic data between 85 K and could be described selfconsistently using this approach although small deviations cannot be excluded in a temperature interval of less than 1 K around and a small tail of excess entropy at . |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The cubic-tetragonal phase transition in strontium titanate: excess specific heat measurements and evidence for a near-tricritical, mean field type transition mechanism |
| Тип | paper |
| DOI | 10.1088/0953-8984/10/25/006 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 10 |
| Первая страница | 5535 |
| Последняя страница | 5543 |
| Выпуск | 25 |
