Patent ID: 6854125

Claim:
A magnetic head comprising a magnetic core for mainly applying a modulated magnetic field to a magneto-optical recording medium, and a coil wound around the magnetic core, wherein the modulated magnetic field generated by modulating a current flowing through a coil in accordance with a recording signal is applied locally to a portion of the magneto-optical recording medium in which a coercive force is reduced by irradiation of a laser beam, so that informationis recorded on the magneto-optical recording medium, and wherein a ratio α 0 satisfies: 1≦α 0 ≦4 where α 0 ≡w 0 /h 0 , and h 0 and w 0 represent dimensions of a cross-sectional area of the coil taken along a plane substantially orthogonally crossing a direction in which charges move when current is passed through the coil, h 0 and w 0 representing a dimension of the cross-sectional area in an excitation direction of the coil, and a dimension of the same in a direction perpendicular to the excitation direction, respectively.