Stability Of Perpendicular Domains In Thermomagnetic Recording Materials

M, H. Kryder; W. H. Meiklejohn; R. E. Skoda

doi:10.1117/12.936074

10 November 1983 Stability Of Perpendicular Domains In Thermomagnetic Recording Materials

M, H. Kryder, W. H. Meiklejohn, R. E. Skoda

Proceedings Volume 0420, Optical Storage Media; (1983) https://doi.org/10.1117/12.936074
Event: 1983 Optical Mass Data Storage Conferences, 1983, Arlington, United States

Abstract

The stability of reverse domains in thin films of magnetic materials having high coerciv-ity is investigated. It is shown that domains below a critical diameter are unstable and will collapse. To minimize this minimum domain diameter it is necessary to minimize domain wall energy while maximizing the product of magnetization times coercivity, M.H_c. Since M.H_c tends to be nearly a constant near the magnetic compensation temperature, it is concluded that domain wall energy a and the product M-Hcare critical parameters for assessing the use-fulness of a material for high density thermomagnetic recording applications.

Citation Download Citation

M, H. Kryder, W. H. Meiklejohn, and R. E. Skoda "Stability Of Perpendicular Domains In Thermomagnetic Recording Materials", Proc. SPIE 0420, Optical Storage Media, (10 November 1983); https://doi.org/10.1117/12.936074

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