Thin-film magnetic head with near-field-light-generating layer

Details Thin-film magnetic head with near-field-light-generating layer Thin-film magnetic head with near-field-light-generating layer

2011-03-22

2011-03-22

Renner, Craig A. (Department: 2627)

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

C369S013020, C360S059000

Reexamination Certificate

active

07911882

ABSTRACT:
A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic medium during write operation by generating a near-field light, having a shape tapered toward a head end surface on the opposed-to-medium surface side, and comprising a near-field-light-generating portion having a light-received surface and a tip reaching the head end surface on the opposed-to-medium surface side, and the light-received surface being sloped in respect to the element-formed surface and being provided in a position where an incident light propagating from a head end surface opposite to the opposed-to-medium surface can reach at least a part of the light-received surface.

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S. Miyanishi et al., “Near-Field Assisted Magnetic Recording”, IEEE Transactions on Magnetics, vol. 41, No. 10, Oct. 2005, pp. 2817-2821.

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