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A simplified quantitative recording model, for thick media, and for media with arbitrary easy axis orientation is reported. The model is based on an extended version of the Williams and Comstock model. Solutions of the model are determined through an iterative procedure. The model employs a minimum number of adjustable parameters. Comparisons between calculations made with the model and experimental data in the time and frequency domain indicate the model has quantitative accuracy for ME tapes.

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Measurements of the structural, magnetic, and recording properties of several commercial metal evaporated (ME) tapes are presented. Special attention is paid to the effect of multiple layers, with different easy-axis directions, pn these properties. We find evidence that the different layers in ME tape are magnetically independent from one another.

By extending the Williams and Comstock model a first order theory of magnetic recording on media with arbitrary easy axis orientation is presented. For a given easy axis orientation a recorded magnetic transition is modeled using three parameters: the transition width, the transition location, and the medium remanent magnetization. By considering media with multiple easy axes the model successfully simulates vector features of the recording process in a medium whose net orientation is longitudinal.