PII: S0927-0256(97)00150-X
Magnetic structure of nonideal Fe/Cr interface N. S. Yartsevaa, V. M. Uzdinb, * and C. Demangeatc a Institute of Metal Physics, GSP-170 Ekaterinburg, 620219 Russian Federationb Saint-Petersburg State University, CAPE, V.O. 14 linia, 29 St. Petersburg, 199178 Russian Federationc IPCMS, 23, rue du Loess 67037 Strasbourg France Available online 16 April 1999.
N. S. Yartsevaa, V. M. Uzdinb, * and C. Demangeatc
Different kinds of space defects on the background of ideal smooth interface in Fe/Cr multilayers, such as steps, embedded clusters, pinholes, random interface roughness, are investigated within model Hamiltonian approach. Calculations of magnetic structure are performed in the periodic Anderson model (PAM) in mean field approximation by recursion method in the real space.
The distribution of magnetic moments obtained for two sets of interfaces (with different roughness) shows strong sensitivity of magnetic structure to the interface roughness and interdiffusion. Application of the theory for interpretation of Mössbauer spectra of Fe/Cr multilayers is discussed. Spectra obtained for three perpendicular orientations of the sample relatively to the incident beam allowed to avoid the problem of nonrandom distribution of magnetic moment direction in the multilayers.
Information about the angular dependence of hyperfine fields on the Fe atoms in Fe/Cr superlattices obtained by means of Mössbauer spectroscopy technique is discussed within the framework of the theory of noncollinear magnetic structure.
Author Keywords: Roughness; Interdiffusion; Electronic structure; Mössbauer spectroscopy
Index Terms: Iron; Chromium; Magnetic materials; Magnetic properties; Interfaces (materials); Interdiffusion (solids); Multilayers; Superlattices; Mossbauer spectroscopy; Electronic structure; Roughness
*Corresponding author.
Send feedback to ScienceDirectSoftware and compilation © 2002 ScienceDirect. All rights reserved.ScienceDirect® is an Elsevier Science B.V. registered trademark.