Compensation for the demagnetizing field in remanence measurements (マルチメディアストレージ第6回アジア情報記録技術シンポジウム〔英文〕)

概要

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It is necessary to compensate for the demagnetizing field in remanence measurements of perpendicular magnetic recording films. In this paper, a new method of compensating for the demagnetizing field is proposed and an effective reverse field H_<eff> is used to evaluate the dc demagnetization measurements, isothermal remanent magnetization curves, and the ΔM plots for perpendicular magnetic recording films. The demagnetization factor N is important for this method, and three methods are used to estimate the value of N. The results of the ΔM plots indicate that the intergranular interactions in Ba ferrite films seem to be exchange coupling, while those in Co-Cr-Ta films are magnetostatic interactions.
社団法人映像情報メディア学会の論文
2001-11-07