| Автор | C N Guy |
| Дата выпуска | 1978-06-01 |
| dc.description | Studies of magnetic viscosity in Au-Fe alloys containing 2 at.% and 7 at.% Fe are presented. The time decays of the remanences IRM and TRM are given for a range of temperatures up to and including the spin glass temperature, T<sub>f</sub>. All the decays are best described by the relation M=M<sub>0</sub>-Snlnt. S<sub>TRM</sub>(T), S<sub>IRM</sub>(T) both have maxima at 0.6 T<sub>f</sub>. The IRM data suggests a linear relation between S and M<sub>0</sub>. Plots of S/M<sub>0</sub>=V against T suggest the existence of two regimes of temperature below T<sub>f</sub>: (1)T<or=0.8 T<sub>f</sub>, V<sub>IRM</sub> nearly constant, independent of T, and much larger than V<sub>TRM</sub>. (2) 0.8<or=T<or=T<sub>f</sub>, both V<sub>IRM</sub> and V<sub>TRM</sub> strongly dependent on T and of nearly the same magnitude. These results at low temperatures can be qualitatively reproduced using a very simple activation model for noninteracting fine particles. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Spin glasses in low DC fields. II. Magnetic viscosity |
| Тип | paper |
| DOI | 10.1088/0305-4608/8/6/029 |
| Print ISSN | 0305-4608 |
| Журнал | Journal of Physics F: Metal Physics |
| Том | 8 |
| Первая страница | 1309 |
| Последняя страница | 1319 |
| Аффилиация | C N Guy; Phys. Dept., Imperial Coll., London, UK |
| Выпуск | 6 |
