Near-field light generator plate, thermally assisted magnetic head, head gimbal assembly, and hard disk drive
AssigneeTDK Corporation
InventorsKoji Shimazawa, Kosuke Tanaka
Life of this patent
Estimating the term…
Abstract
A near-field light generator plate 36 of the present invention is arranged to face a medium 10, and one portion 36b and other portion 36a in a medium-facing surface S thereof are made of their respective electroconductive materials different from each other. Since the one portion and the other portion in the medium-facing surface are made of the electroconductive materials different from each other, this medium-facing surface is formed by a surface removing step such as polishing or etching from the medium-facing surface side so that a difference between heights of the one portion and the other portion is readily made based on the difference of the materials.
Claims13
A near-field light generator plate which is arranged so that a principal surface thereof faces a medium, and
- in which one portion and other portion in the principal surface are made of respective electroconductive materials different from each other, wherein each of the electroconductive materials is a metal or an alloy of two or more metals selected from a metal group consisting of Pd, Pt, Rh, Ir, Ru, Au, Ag, Cu, and Al.
A near-field light generator plate which is arranged so that a principal surface thereof faces a medium, and
- in which one portion and other portion in the principal surface are made of respective electroconductive materials different from each other, wherein the electroconductive material of the one portion has a higher hardness or a lower etching speed than the electroconductive material of the other portion, wherein the one portion is made of AuCu and the other portion is made of Au.
Dependencies are inferred from the claim text.