Optimisation of dual structure recording media for microwave-assisted magnetic recording
Dual structure recording media with a “notched” anisotropy configuration were optimised for use in a microwave-assisted magnetic recording system. First of all the effective head field gradient was maximised by tuning the anisotropy of the layers in each structure. Next, intergranular and interlayer...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2020-12-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/9.0000029 |
| _version_ | 1818871561383313408 |
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| author | Simon John Greaves Yasushi Kanai |
| author_facet | Simon John Greaves Yasushi Kanai |
| author_sort | Simon John Greaves |
| collection | DOAJ |
| description | Dual structure recording media with a “notched” anisotropy configuration were optimised for use in a microwave-assisted magnetic recording system. First of all the effective head field gradient was maximised by tuning the anisotropy of the layers in each structure. Next, intergranular and interlayer exchange coupling was adjusted to maximise the signal to noise ratio of written tracks. A grain switching probability model was trained and used to generate written bit sequences for read bit error rate calculations. For two structures with different ferromagnetic resonance frequencies the total amount of user data that could be stored on the two structures was estimated to be 2.98 Tbit/in2. |
| first_indexed | 2024-12-19T12:24:52Z |
| format | Article |
| id | doaj.art-cc670a818cfb4164aaf6814c0ff0fee5 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-19T12:24:52Z |
| publishDate | 2020-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-cc670a818cfb4164aaf6814c0ff0fee52022-12-21T20:21:37ZengAIP Publishing LLCAIP Advances2158-32262020-12-011012125130125130-410.1063/9.0000029Optimisation of dual structure recording media for microwave-assisted magnetic recordingSimon John Greaves0Yasushi Kanai1RIEC, Tohoku University, Katahira 2-1-1, Aoba ku, Sendai 980-8577, JapanNiigata Institute of Technology, Kashiwazaki 945-1195, JapanDual structure recording media with a “notched” anisotropy configuration were optimised for use in a microwave-assisted magnetic recording system. First of all the effective head field gradient was maximised by tuning the anisotropy of the layers in each structure. Next, intergranular and interlayer exchange coupling was adjusted to maximise the signal to noise ratio of written tracks. A grain switching probability model was trained and used to generate written bit sequences for read bit error rate calculations. For two structures with different ferromagnetic resonance frequencies the total amount of user data that could be stored on the two structures was estimated to be 2.98 Tbit/in2.http://dx.doi.org/10.1063/9.0000029 |
| spellingShingle | Simon John Greaves Yasushi Kanai Optimisation of dual structure recording media for microwave-assisted magnetic recording AIP Advances |
| title | Optimisation of dual structure recording media for microwave-assisted magnetic recording |
| title_full | Optimisation of dual structure recording media for microwave-assisted magnetic recording |
| title_fullStr | Optimisation of dual structure recording media for microwave-assisted magnetic recording |
| title_full_unstemmed | Optimisation of dual structure recording media for microwave-assisted magnetic recording |
| title_short | Optimisation of dual structure recording media for microwave-assisted magnetic recording |
| title_sort | optimisation of dual structure recording media for microwave assisted magnetic recording |
| url | http://dx.doi.org/10.1063/9.0000029 |
| work_keys_str_mv | AT simonjohngreaves optimisationofdualstructurerecordingmediaformicrowaveassistedmagneticrecording AT yasushikanai optimisationofdualstructurerecordingmediaformicrowaveassistedmagneticrecording |