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  • 1
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Many recent studies of recording and playback in magnetic recording systems have been based on the computer simulation of micromagnetic models of magnetic recording media. Medium models are capable of representing a large class of recording media by selection of appropriate values of model parameters representing the intrinisic properties of the recording medium material. Such parameters include grain size, anisotropy energy density, and exchange energy constant. Largely missing in these studies, however, has been a discussion of how to identify a set of parameter values to represent a particular medium of interest. In this presentation, we describe an identification procedure for selecting the values of the five intrinsic parameters of a micromagnetic medium model to represent a recording medium for which the following hysteresis properties are known: remanent magnetization, coercivity, remanence squareness, and coercivity squareness. Calculation of hysteresis loops verifies that the particular instance of the medium model identified by this procedure reproduces the hysteresis behavior of the medium of interest. Comparison of computer simulations of recording operations to measured recording performance of a medium on a laboratory tester may then be meaningfully made.© 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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