Abstract Scope |
The magnetic domains in bulk, non-transparent magnetic specimens are not accessible by simply cleaving the sample as the domains would immediately adapt to the new surface. Therefore, in the past, domain analysis on bulk materials was usually performed by surface domain observation and by using arguments from domain theory to infer the inner domains. In recent years, however, there was impressive progress in the development of magnetic tomographic imaging, which has the potential to disclose the complete domain structure. In this presentation those novel methods, which comprise full-field soft x-ray spectromicroscopy, hard x-ray tomography, off-axis electron holography, and neutron dark-field microscopy, are reviewed. Emphasise will be on Libovicky tomography [1], which is applied to reveal the true three-dimensional structure of characteristic domain patterns in ironlike material. [1] R. Schäfer and S. Schinnerling: Tomography of basic magnetic domain patterns in ironlike bulk material. Phys. Rev. B 101, 214430 (2020) |