Noble Metal Coated Plasmonic Waveguide Blocker For Heat Assisted Magnetic Recording Head

Abstract

The present embodiments relate to a noble metal coating on a parabolic waveguide blocker surface to future improve thermal gradient for HAMR head which can provide an improved thermal spot confinement over other designs. More particularly, the present embodiments relate to a component in the near field transducer (NFT), made of a metallic parabolic shaped waveguide blocker (PWB) with noble metal coating on the PWB surface. The designs as described herein can include a noble metal coating (e.g., Au, Rh, Ir, Pt, Aluminum (Al), etc.) which can enable a plasmonic effect on the PWB surface for HAMR thermal gradient improvement.

Dependencies are inferred from the claim text.