Magnetic texture in films with perpendicular anisotropy

The notion of magnetic texture in films for perpendicular magnetic recording is introduced. The characteristics of magnetic texture dispersion ( Delta upsilon sub 50 ) in Co--Cr films are also defined. The method of determination of material constants from the curves of film magnetization, including...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 1992-03, Vol.109 (2-3), p.375-382
Main Authors: ZHORIN, P. V, LISOVSKY, YU. A, NIKULOV, I. G, STOLYAROV, V. L
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Metals. Metallurgy
Physics
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Summary:The notion of magnetic texture in films for perpendicular magnetic recording is introduced. The characteristics of magnetic texture dispersion ( Delta upsilon sub 50 ) in Co--Cr films are also defined. The method of determination of material constants from the curves of film magnetization, including the first and second anisotropy constants K sub 1 and K sub 2 , and Delta upsilon sub 50 is proposed. The effects of film structure have been studied on the basis of a magnetostatic model of a columnar structure. The shape anisotropy constant is estimated to have the value approx 5 x 10 exp 5 erg/cm exp 3 , when M sub s in the volume of column is 400 G. The criteria for the applicability of films as perpendicular magnetic recording media are also formulated.
ISSN:0304-8853
DOI:10.1016/0304-8853(92)91776-P