Autocorrelation analysis of particle magnetization in erased particulate media.
Aziz, Mustafa M.
Middleton, Barry K.
Miles, J. J.
IEEE Transactions on Magnetics
General analytical expressions for the magnetization power spectral densities of particulate media are derived by using the three-dimensional autocorrelation function. Expressions include the effects of AC demagnetized media and any DC components resulting from the presence of particle chains. The replay flux power spectral density is then obtained, assuming a linear replay transducer.
notes: This paper developed a complete analytical description of the origins and effects of noise in magnetic storage media. The research was part of an EPSRC project (GR/M46648/01, Noise in Advanced Magnetic Recording Tapes) with Hewlett Packard Peripherals (Bristol) to explore sources of media noise and their impact on the performance of HP's commercial (DDS-4) tape systems. The theory presented is generic, applicable to other media used in data storage, and provides guidelines for the reduction of noise and therefore errors in storage systems in general.
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Vol. 38 (1), pp. 279-287