| Автор | Q A Pankhurst |
| Автор | C E Johnson |
| Автор | M F Thomas |
| Дата выпуска | 1986-12-20 |
| dc.description | The Mossbauer spectra of single crystals of alpha -Fe<sub>2</sub>O<sub>3</sub> have been measured (i) close to the Morin transition at T<sub>M</sub> approximately=260K, (ii) at 4.2K in magnetic fields parallel to the (111) axis in the region of the spin-flop transition, and (iii) at temperatures below T<sub>M</sub> in magnetic fields perpendicular to the (111) axis. The first two transitions show a coexistence of two magnetic phases over a range of temperatures and fields respectively, confirming their first-order character, although no hysteresis was observed. The width of the transitions showed a strong dependence on small levels of impurity and on strains. In the third transition a gradual reorientation of all the spins towards a direction in the (111) plane perpendicular to the applied field was observed. This transition was incomplete at the highest fields and temperatures used (10.0 T at 245K). |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | A Mossbauer study of magnetic phase transitions in alpha -Fe<sub>2</sub>O<sub>3</sub> crystals |
| Тип | paper |
| DOI | 10.1088/0022-3719/19/35/018 |
| Print ISSN | 0022-3719 |
| Журнал | Journal of Physics C: Solid State Physics |
| Том | 19 |
| Первая страница | 7081 |
| Последняя страница | 7098 |
| Аффилиация | Q A Pankhurst; Dept. of Phys., Liverpool Univ., UK |
| Аффилиация | C E Johnson; Dept. of Phys., Liverpool Univ., UK |
| Аффилиация | M F Thomas; Dept. of Phys., Liverpool Univ., UK |
| Выпуск | 35 |
