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The coercivity of haematite exceeds that of magnetite, and hence this technique is of little use on haematite-dominated magnetizations.
Magnetic stripes are defined by coercivity , or how densely the magnetic particles are packed into the stripe.
The straightforward remedy is to adopt magnetic materials of higher coercivity , meaning they are harder both to magnetize and to demagnetize.
A fundamental challenge researchers are facing is that high media coercivity is normally associated with an increased difficulty in writing.
To enable increased bit and track densities, media manufacturers have used increasing coercivity for every successive generation of tape products.
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