# US 10,373,632 B2 · Heat-assisted removal of head contamination > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,373,632 B2 - Document ID: US10373632B2 - Status: Granted - Kind: B2 - Application number: 15/865,201 - Filed: 2018-01-08 - Published: 2018-08-16 - Granted: 2019-08-06 - Earliest claimed: 2017-02-15 - Assignees: Seagate Technology LLC - Applicants: Seagate Technology LLC - Inventors: John L. Brand; James D. Kiely - Web page: https://patentgrep.com/patent/US10373632B2 ## CPC - G11B 5/3133: {including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure (G11B5/3106 takes precedence)} - G11B 5/3116: {Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks (G11B5/3113, G11B5/245 take precedence)} - G11B 5/3146: {magnetic layers} - G11B 5/41: Cleaning of heads {(of record carriers G11B23/50)} - G11B 5/71: characterised by the lubricant - G11B 5/725: containing a lubricant {, e.g. organic compounds (inorganic carbon protective coating G11B5/727)} - G11B 5/82: Disk carriers - G11B 2005/0021: {Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal} - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract Provided herein is a magnetic write head including a near field transducer and a magnetic recording media including a media lubricant. The media lubricant includes a first portion and a second portion. The second portion of the media lubricant is evaporated in response to heat emitted from the near field transducer. The second portion of the media lubricant that is evaporated removes a contaminant over the near field transducer. ## Claims ### Claim 1 An apparatus comprising: a magnetic write head including a near field transducer and a write pole; and a magnetic recording media including a media lubricant, wherein the media lubricant includes a first portion and a second portion, the second portion of the media lubricant is evaporated in response to heat emitted from the near field transducer, and the second portion of the media lubricant that is evaporated removes a contaminant over the near field transducer. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the second portion of the media lubricant is at an outer diameter of the magnetic recording media. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the second portion of the media lubricant is at an inner diameter of the magnetic recording media. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the first portion of the media lubricant and the second portion of the media lubricant overlap. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the second portion of the media lubricant is between an inner diameter and an outer diameter of the magnetic recording media. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the second portion of the media lubricant includes a thermally reactive lubricant. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the second portion of the media lubricant includes an outer diameter region and an inner diameter region, and the outer diameter region includes a different thermally reactive lubricant than the inner diameter region. ### Claim 8 An apparatus comprising: a first region of a magnetic recording media; and a second region of the magnetic recording media that is evaporated in response to heat emitted from a near field transducer on a write head including a write pole, wherein the second region that is evaporated removes contaminants over the near field transducer. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the second region of the magnetic recording media is at an outer diameter of the magnetic recording media. ### Claim 10 (depends on 8) The apparatus of claim 8, wherein the second region of the magnetic recording media is at an inner diameter of the magnetic recording media. ### Claim 11 (depends on 8) The apparatus of claim 8, wherein the first region of the magnetic recording media and the second region of the magnetic recording media both cover an entire surface of the magnetic recording media. ### Claim 12 (depends on 8) The apparatus of claim 8, wherein the second region of the magnetic recording media is between an inner diameter and an outer diameter of the magnetic recording media. ### Claim 13 (depends on 8) The apparatus of claim 8, wherein the second region of the magnetic recording media includes an outer diameter region and an inner diameter region, and the inner diameter region evaporates at a higher temperature than the outer diameter region. ### Claim 14 (depends on 8) The apparatus of claim 8, wherein the first region of the magnetic recording media includes surface contaminants that are evaporated in response to the heat emitted from the near field transducer. ### Claim 15 A method comprising: heating a first region of a magnetic recording media with a near field transducer on a write head including a write pole, wherein the heating causes a contaminant to form over the near field transducer; and heating a second region of the magnetic recording media with the near field transducer, wherein the second region is evaporated in response to the heating, and the second region that is evaporated removes the contaminant over the near field transducer. ### Claim 16 (depends on 15) The method of claim 15, wherein the second region of the magnetic recording media is at an outer diameter of the magnetic recording media or an inner diameter of the magnetic recording media. ### Claim 17 (depends on 15) The method of claim 15, wherein the first region of the magnetic recording media and the second region of the magnetic recording media overlap. ### Claim 18 (depends on 15) The method of claim 15, wherein the second region of the magnetic recording media is between an inner diameter and an outer diameter of the magnetic recording media. ### Claim 19 (depends on 15) The method of claim 15, wherein the second region of the magnetic recording media includes an outer diameter region and an inner diameter region, and the inner diameter region evaporates at a higher temperature than the outer diameter region. ### Claim 20 (depends on 15) The method of claim 15, wherein the second region of the magnetic recording media includes an outer diameter region and an inner diameter region, and the outer diameter region includes a different thermally decomposing lubricant than the inner diameter region.