Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9837906 | Physica B: Condensed Matter | 2005 | 7 Pages |
Abstract
A periodic magnetic stripe array has been studied with a combination of real and reciprocal space methods: Kerr microscopy and polarized neutron reflectivity. The basic features of our experimental neutron data are well reproduced by a theoretical model using the distorted Born wave approximation and providing a set of parameters quantifying the magnetization arrangement in the stripe array system. While the specular neutron reflectivity measures a mean value of the optical potential averaged over a number of structural elements within the neutron coherence length, Bragg diffraction filters out magnetic correlation effects in the system of individual magnetic units within this length scale. Off-specular diffuse scattering probes correlations of magnetization fluctuations on a scale smaller than the coherence length. This altogether gives access to a detailed understanding of the magnetization arrangement which appears to be quite complex and hardly accessible by other methods.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Katharina Theis-Bröhl, Hartmut Zabel, Jeffrey McCord, Boris P. Toperverg,