Apparatus, system and method for writing information onto magnetic media

摘要

A method of writing data onto magnetic thin film media commonly employed in magnetic disk drives at sub-ambient temperatures is disclosed. The method employs a thin film capacitor having a magnetoelectric element as its dielectric in a GMR read/write head to produce magnetic fields. To get the maximum magnetic field from the thin film capacitor, the thin-film capacitor is cooled via a thermoelectric cooling device present in the GMR read/write head of the magnetic disk drive. The magnetic field produced by the thermoelectrically cooled thin film capacitor structure is capable of writing data onto magnetic media with increased bit densities or coercivity. The effective magnetic moment of the thin film capacitor structure can be increased, as increases in the bit density or coercivity of the magnetic media require, by providing magnetic materials in a structure configured to focus/confine the magnetic field, by increasing the voltage applied to the thin film capacitor structure and by stacking together multiple thin film capacitor structures.