Patent ID: 8958168
Filing Date: 2015-02-17
Classification: G11B

Abstract:
1. An energy assisted magnetic recording (EAMR) transducer coupled with a laser for providing energy and having an air-bearing surface (ABS) configured to reside in proximity to media during use, the EAMR transducer comprising: a composite near field transducer (NFT) for focusing the energy onto a region of the media, the composite NFT including a plurality of metal layers interleaved with at least one insulating layer, the plurality of metal layers sandwiching the at least one insulating layer, a metal layer of the plurality of metal layers residing at a surface of the composite NFT, the surface of the composite NFT configured to focus the energy, the plurality of metal layers sharing a plurality of interfaces with the at least one insulating layer, the plurality of interfaces being substantially perpendicular to the ABS, the composite NFT including at least one metal and at least one insulator therein, the at least one insulator including at least one of SiO 2 , MgO, Al 2 O 3 , Ta 2 O 5 and C and comprising at least two volume percent of the NFT; a write pole configured to write to the region of the media, no portion of the write pole forming a part of the plurality of metal layers; and at least one coil for energizing the write pole.