Patent ID: 8971160
Filing Date: 2015-03-03
Classification: G11B

Abstract:
1. A heat-assisted magnetic recording (HAMR) head, comprising: at least one waveguide; and a near-field transducer (NFT) comprising: wherein the index of optical refraction is greater than 2 and wherein the absorption coefficient is less than 1; wherein the pin material comprises at least one of: Ge, Si, a-Si, GaAs, AlSb, AZO, GZO, GaP, AlAs, ITO, TiO wherein the main body comprises gold or a gold alloy; wherein the NFT comprises a second main body, wherein the second main body comprises a material with a high index of optical refraction, and wherein the second main body and the pin are manufactured on top of the gold or gold alloy main body.