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The authors discuss some factors that limit the permissible input power in multi-track magnetoresistive (MR) tape heads. The possible consequences of increasing the power dissipation in MR heads as a means of increasing readback signal amplitude are discussed. A simple model to describe the temperature rise of a shielded MR element is given. Evidence for exceeding the Curie point of ferrite used in shielded MR heads is seen with element temperatures in excess of 340 degrees C recorded prior to element burnout.>
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Dee et al. (1991) studied this question.
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