Lorentz electron microscopy of domain walls in single−crystal evaporated iron films
- 1 January 1975
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 46 (1), 416-421
- https://doi.org/10.1063/1.321352
Abstract
A method for measuring the width of domain walls by Lorentz electron microscopy is presented and applied to the case of a single−crystal iron film. The method consists of measuring the domain wall image width at a number of defocusing distances and fitting the resulting curve to a theoretical curve of image width versus defocusing distance using the wall width and a parameter which is a function of the deviation of the beam as variables. The appearance of the wall images and the measured wall widths indicate that domain walls in single−crystal iron films around 1000 Å thick are 180 ° asymmetric and 90 ° symmetric or asymmetric types.Keywords
This publication has 16 references indexed in Scilit:
- Lorentz electron microscopy of magnetic domains in a Co–Ce permanent magnetApplied Physics Letters, 1973
- Ferromagnetic Domain Wall Width Measurements Using Lorentz Electron MicroscopyJournal of Applied Physics, 1970
- Two-Dimensional Bloch-Type Domain Walls in Ferromagnetic FilmsJournal of Applied Physics, 1969
- Investigation of the Geometrical-Optical Theory of Magnetic Structure Imaging in the Electron MicroscopeJournal of Applied Physics, 1966
- An investigation into the use of intensity observations in the electron microscope for determining magnetic domain wall widths in thin foilsPhilosophical Magazine, 1964
- The Determination of Domain Wall Thickness in Ferromagnetic Films by Electron MicroscopyProceedings of the Physical Society, 1962
- Transmission Electron Microscope Observations of Magnetic Domain WallsJournal of Applied Physics, 1961
- Determination of Magnetization Distribution in Thin Films Using Electron MicroscopyJournal of Applied Physics, 1960
- LXXI. Energies and widths of domain boundaries in ferromagneticsJournal of Computers in Education, 1950
- Theory of the Structure of Ferromagnetic Domains in Films and Small ParticlesPhysical Review B, 1946