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Observation of Micromagnetic Structure in Computer Hard Disks by Lorentz Transmission Electron Microscopy

  • K. Tang (a1), M.R. Visokay (a1), R. Sinclair (a1), C.A. Ross (a2), R. Ranjan (a2) and T. Yamashita (a2)...

Abstract

We have observed micromagnetic structure in real computer hard disks with the typical structure of C/Co alloy/Cr/NiP/Al(substrate) using Lorentz transmission electron microscopy (LTEM). A chemical etching method was introduced to successfully prepare LTEM specimens directly from the computer hard disks with both smooth and mechanically textured substrates. Micromagnetic structural features, e.g., ripples and vortices, were studied in disks in bitswritten, ac-demagnetized, and saturation remanent magnetic states.

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1. Scheinfein, M.R., Unguris, J., Pierce, D.T., and Celotta, R.J., J. Appl. Phys. 67, 5932 (1990).
2. Cameron, G.P. and Judy, J.H., IEEE Trans. Magn. 29, 4177 (1993).
3. Kawabe, T. and Judy, J.H., IEEE Trans. Magn. 28, 2470 (1992).
4. Fuller, H.W. and Hale, M.E., J. Appl. Phys. 31, 238 (1960).
5. Arnoldussen, T.C., Nunnelley, L.L., Martin, F.J., Ferrier, R.P., J. Appl. Phys. 69, 4718 (1991).
6. Lin, T., Christner, J.A., Mitchell, T.B., Gau, J.-S., George, P.K., IEEE Trans. Magn. 25, 710 (1989).
7. Chen, T., IEEE Trans. Magn. MAG- 17, 1181 (1981).
8. Ranjan, R., Bennett, W.R., Tarnopolsky, G.J., Yamashita, T., Nolan, T., and Sinclair, R., J. Appl. Phys. 75, 6144 (1994).

Observation of Micromagnetic Structure in Computer Hard Disks by Lorentz Transmission Electron Microscopy

  • K. Tang (a1), M.R. Visokay (a1), R. Sinclair (a1), C.A. Ross (a2), R. Ranjan (a2) and T. Yamashita (a2)...

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