| Автор | R S Eccleston |
| Автор | M Hagen |
| Автор | Ll Mañosa |
| Автор | G A Saunders |
| Автор | H L Alberts |
| Дата выпуска | 1996-10-14 |
| dc.description | Calorimetric and time-of-flight neutron diffraction experiments are used to establish thermodynamic and structural features of a Cr+0.3 at.% Ru alloy crystal as it undergoes a commensurate-to-incommensurate spin-density-wave (CDSW - ICDSW) phase transition. Both methods confirm the first-order character of the transition. The calorimetric measurements made at the CSDW - ICSDW transition, using a differential scanning microcalorimeter, show that the latent heat and entropy changes at the transition are small: the transition is only weakly first order. The difference between the specific heat of the incommensurate phase and that, , of the commensurate phase is determined as . In the neutron diffraction experiments the thermal evolution of the intensities and positions of the commensurate and the incommensurate peaks have been monitored in the region of the transition. There is a temperature range of approximately 28 K in which the commensurate and the incommensurate peaks coexist. This coexistence of the two phases is consistent with a broad anomaly observed in the specific heat. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Calorimetric and neutron diffraction studies of the commensurate - incommensurate spin-density-wave phase transition of Cr+0.3 at.% Ru alloy |
| Тип | paper |
| DOI | 10.1088/0953-8984/8/42/003 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 8 |
| Первая страница | 7837 |
| Последняя страница | 7846 |
| Выпуск | 42 |
