| Автор | A del Moral |
| Автор | J I Arnaudas |
| Автор | P M Gehring |
| Дата выпуска | 1994-06-20 |
| dc.description | We have studied the magnetic phase diagram for the dilute alloys (Dy<sub>x</sub>Y<sub>1-x</sub>)Al<sub>2</sub> in the concentration range 0.10<or=x<or=0.50. We find the systems to be disordered magnets with random magnetic anisotropy. For x<or=0.30, the system undergoes a single transition from paramagnetic (PM) to spin-glass (SG) state. For 0.35<or=x<or=0.50, a re-entrant coherent spin-glass (CSG) phase appears between the PM and SG states, formed by intrinsic nearly ferromagnetic domains. The triple point is located at x approximately=0.35. However, no evidence of any long-range magnetic order was found in the concentration range studied. We have also determined the temperature variation of the spontaneous Edwards-Anderson order parameter for x<or=0.30. The scaling analyses performed for the non-linear susceptibility indicate true phase transitions for the PM-SG line for x<0.35, and yield values for the critical exponents beta , gamma and delta . |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Spin-glass behaviour in dilute weak random-anisotropy magnets Dy<sub>x</sub>Y<sub>1-x</sub>Al<sub>2</sub> |
| Тип | paper |
| DOI | 10.1088/0953-8984/6/25/016 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 6 |
| Первая страница | 4779 |
| Последняя страница | 4794 |
| Аффилиация | A del Moral; Dept. de Fisica de la Mater. Condensada, Zaragoza Univ., Spain |
| Аффилиация | J I Arnaudas; Dept. de Fisica de la Mater. Condensada, Zaragoza Univ., Spain |
| Аффилиация | P M Gehring; Dept. de Fisica de la Mater. Condensada, Zaragoza Univ., Spain |
| Выпуск | 25 |
