A study of the different interfaces in superlattices
Uppsala University, Department of Physics - Box 530, 751 21 Uppsala, Sweden
Accepted: 20 November 2000
Interfaces in multilayers have been examined. Two pairs of samples each with definite x and y were prepared using the same deposition process and the same elemental variations with the probe layers interfoliated between completed V and Fe (natural abundance) layers. The only difference was the deposition ordering. The superlattice structures were analyzed by X-ray diffraction and Conversion Electron Mössbauer Spectroscopy at room temperature and at 10 K. The magnetic hyperfine field distribution for the pairs is found to be significantly different, irrespectively of the values of x, and y and can be interpreted as due to the Fe layer being smoother than the V one. The magnetic moments derived for the interface layer as well as for the subsequent atomic layer are significantly lower than the calculated values.
PACS: 75.70.Cn – Interfacial magnetic properties (multilayers, magnetic quantum wells, superlattices, magnetic heterostructures) / 76.80.+y – Mössbauer effect; other γ-ray spectroscopy
© EDP Sciences, 2001