In-situ Lorentz microscopy and Lorentz phase imaging of artificially structured Co arrays

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Proceedings titlePhilosophical Magazine
ConferenceInternational Symposium on In-situ Electron Microscopy, 20-22 January 2003, Nagoya, Japan
Pages26072617; # of pages: 11
AbstractWe combined in-situ magnetizing experiments with Lorentz Fresnel microscopy and Lorentz phase microscopy to analyse both qualitatively and quantitatively the in-situ magnetization process of artificially structured two dimensional arrays of Co islands. A newly developed Lorentz phase microscopy allows detailed mapping of in-plane magnetization on a nanometre scale following the hysteresis loop. For polycrystalline Co films, 20-40 nm thick, we observed four major steps in the magnetization process: coherent spin rotation in adjacent nanodomains, nucleation of reverse domains, motion of the domain walls and additional spin rotation in magnetic domains and, finally, an expulsion of energetically non-favourable domains followed by the domain wall annihilation at the edges of Co islands. We offer a clear physical explanation of the magnetization ripple contrast.
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NPARC number12328658
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Record identifier62b45678-a860-4783-b335-864b2d0221af
Record created2009-09-10
Record modified2016-05-09
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