| Автор | J M B Ndjaka |
| Автор | D Givord |
| Дата выпуска | 1996-10-01 |
| dc.description | Y-Co/Nd-Co/Y-Co and Nd-Co/Y-Co/Nd-Co amorphous sandwiches have been prepared by d.c. triode sputtering. The chemical composition of the constituent layers is R<sub>0.33</sub>Co<sub>0.67</sub> (R = Y, Nd). In such systems, the Co moments are coupled parallel through the whole sandwich thickness by strong positive 3d-3d exchange interactions. But, the coercive fields of the constituent layers taken separately differ. In the sandwiches as well, the reversal of magnetization in the different layers occurs at different values of the applied magnetic field. This phenomenon has been analysed qualitatively in terms of creation and annihilation of walls at the interfaces between layers for sandwiches where the thicknesses of the constituent layers are about 1000 Å. In sandwiches where the thickness of the constituent layers is 100 Å, the wall width available is very weak and the value of the applied magnetic field necessary for the creation of such a wall is higher than the coercive field of the entire sandwich system. As a result, the magnetization of the sandwich system reverses as a whole like in homogeneous systems. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Magnetic properties of sandwiches based on Nd–Co and Y–Co amorphous alloys |
| Тип | paper |
| DOI | 10.1088/0031-8949/54/4/019 |
| Electronic ISSN | 1402-4896 |
| Print ISSN | 0031-8949 |
| Журнал | Physica Scripta |
| Том | 54 |
| Первая страница | 406 |
| Последняя страница | 409 |
| Аффилиация | J M B Ndjaka; Laboratoire Louis Néel, CNRS, 166-X, 38042 Grenoble Cédex, France |
| Аффилиация | D Givord; Laboratoire Louis Néel, CNRS, 166-X, 38042 Grenoble Cédex, France |
| Выпуск | 4 |
