Plasmonic near-field transducer for heat-assisted magnetic recording
Plasmonic devices, made of apertures or antennas, have played significant roles in advancing the fields of optics and opto-electronics by offering subwavelength manipulation of light in the visible and near infrared frequencies. The development of heat-assisted magnetic recording (HAMR) opens up a n...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2014-06-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2014-0001 |
| _version_ | 1819121978460602368 |
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| author | Zhou Nan Xu Xianfan Hammack Aaron T. Stipe Barry C. Gao Kaizhong Scholz Werner Gage Edward C. |
| author_facet | Zhou Nan Xu Xianfan Hammack Aaron T. Stipe Barry C. Gao Kaizhong Scholz Werner Gage Edward C. |
| author_sort | Zhou Nan |
| collection | DOAJ |
| description | Plasmonic devices, made of apertures or antennas, have played significant roles in advancing the fields of optics and opto-electronics by offering subwavelength manipulation of light in the visible and near infrared frequencies. The development of heat-assisted magnetic recording (HAMR) opens up a new application of plasmonic nanostructures, where they act as near field transducers (NFTs) to locally and temporally heat a sub-diffraction-limited region in the recording medium above its Curie temperature to reduce the magnetic coercivity. This allows use of very small grain volume in the medium while still maintaining data thermal stability, and increasing storage density in the next generation hard disk drives (HDDs). In this paper, we review different plasmonic NFT designs that are promising to be applied in HAMR. We focus on the mechanisms contributing to the coupling and confinement of optical energy. We also illustrate the self-heating issue in NFT materials associated with the generation of a confined optical spot, which could result in degradation of performance and failure of components. The possibility of using alternative plasmonic materials will be discussed. |
| first_indexed | 2024-12-22T06:45:09Z |
| format | Article |
| id | doaj.art-903c4a9d06fe4663b53af0136d9161e5 |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-12-22T06:45:09Z |
| publishDate | 2014-06-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-903c4a9d06fe4663b53af0136d9161e52022-12-21T18:35:17ZengDe GruyterNanophotonics2192-86062192-86142014-06-013314115510.1515/nanoph-2014-0001Plasmonic near-field transducer for heat-assisted magnetic recordingZhou Nan0Xu Xianfan1Hammack Aaron T.2Stipe Barry C.3Gao Kaizhong4Scholz Werner5Gage Edward C.6School of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47906, USASchool of Mechanical Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47906, USAHGST, San Jose Research Center, 3403 Yerba Buena Road, San Jose, CA 95135, USAHGST, San Jose Research Center, 3403 Yerba Buena Road, San Jose, CA 95135, USASeagate Technology, 7801 Computer Ave. S., Bloomington, MN 55435, USASeagate Technology, 7801 Computer Ave. S., Bloomington, MN 55435, USASeagate Technology, 1280 Disc Drive, Shakopee, MN 55379, USAPlasmonic devices, made of apertures or antennas, have played significant roles in advancing the fields of optics and opto-electronics by offering subwavelength manipulation of light in the visible and near infrared frequencies. The development of heat-assisted magnetic recording (HAMR) opens up a new application of plasmonic nanostructures, where they act as near field transducers (NFTs) to locally and temporally heat a sub-diffraction-limited region in the recording medium above its Curie temperature to reduce the magnetic coercivity. This allows use of very small grain volume in the medium while still maintaining data thermal stability, and increasing storage density in the next generation hard disk drives (HDDs). In this paper, we review different plasmonic NFT designs that are promising to be applied in HAMR. We focus on the mechanisms contributing to the coupling and confinement of optical energy. We also illustrate the self-heating issue in NFT materials associated with the generation of a confined optical spot, which could result in degradation of performance and failure of components. The possibility of using alternative plasmonic materials will be discussed.https://doi.org/10.1515/nanoph-2014-0001field confinementfield enhancementheat-assisted magnetic recordinglow loss materialsnear field transduceroptical antennaplasmonics |
| spellingShingle | Zhou Nan Xu Xianfan Hammack Aaron T. Stipe Barry C. Gao Kaizhong Scholz Werner Gage Edward C. Plasmonic near-field transducer for heat-assisted magnetic recording Nanophotonics field confinement field enhancement heat-assisted magnetic recording low loss materials near field transducer optical antenna plasmonics |
| title | Plasmonic near-field transducer for heat-assisted magnetic recording |
| title_full | Plasmonic near-field transducer for heat-assisted magnetic recording |
| title_fullStr | Plasmonic near-field transducer for heat-assisted magnetic recording |
| title_full_unstemmed | Plasmonic near-field transducer for heat-assisted magnetic recording |
| title_short | Plasmonic near-field transducer for heat-assisted magnetic recording |
| title_sort | plasmonic near field transducer for heat assisted magnetic recording |
| topic | field confinement field enhancement heat-assisted magnetic recording low loss materials near field transducer optical antenna plasmonics |
| url | https://doi.org/10.1515/nanoph-2014-0001 |
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