| Paper Abstract and Keywords |
| Presentation |
2024-12-05 17:05
Micromagnetic analysis of the effect of the gap field rise time on STO oscillation for MAMR
Keita Tatsuno, Yasushi Kanai (Niigata Inst. Tech.), Simon Greaves (Tohoku Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
The spin-torque oscillator (STO) used in microwave-assisted magnetic recording (MAMR) is the most important component in a MAMR system. One of the most important requirements for the STO is stable oscillation. Micromagnetic simulations showed that an STO model without a recording head (standalone STO) can easily oscillate stably. However, when the STO is integrated into the gap of a recording head (integrated STO) it is hard to obtain stable oscillation due to magnetostatic interactions between the STO and the recording head. It has also been reported that the response speed of the head field, which corresponds to an applied field risetime in an isolated STO, affects the stability of STO oscillation. In this report, the relationship between the oscillation of an integrated STO and the response speed of the head field is investigated, considering various head structures and applied coil current wave forms. The relationship between the response speed of the field applied to an isolated STO and the STO oscillation is also discussed. Finally, we report the effect of the response speed of the field applied to the STO, as well as the effect of magnetostatic interactions between the STO and the recording head, on the oscillation stability of an integrated STO. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
microwave-assisted magnetic recording (MAMR) / spin-torque oscillator (STO) / STO oscillation stability / micromagnetic analysis / write head / in-gap field / / |
| Reference Info. |
ITE Tech. Rep. |
| Paper # |
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| Date of Issue |
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| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
IEICE-MRIS MMS |
| Conference Date |
2024-12-05 - 2024-12-06 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Ehime Univ. (CITE) |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Signal Processing, Holographic Data Storage, and Others |
| Paper Information |
| Registration To |
IEICE-MRIS |
| Conference Code |
2024-12-MRIS-MMS |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Micromagnetic analysis of the effect of the gap field rise time on STO oscillation for MAMR |
| Sub Title (in English) |
|
| Keyword(1) |
microwave-assisted magnetic recording (MAMR) |
| Keyword(2) |
spin-torque oscillator (STO) |
| Keyword(3) |
STO oscillation stability |
| Keyword(4) |
micromagnetic analysis |
| Keyword(5) |
write head |
| Keyword(6) |
in-gap field |
| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Keita Tatsuno |
| 1st Author's Affiliation |
Niigata Institute of Technology (Niigata Inst. Tech.) |
| 2nd Author's Name |
Yasushi Kanai |
| 2nd Author's Affiliation |
Niigata Institute of Technology (Niigata Inst. Tech.) |
| 3rd Author's Name |
Simon Greaves |
| 3rd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2024-12-05 17:05:00 |
| Presentation Time |
25 minutes |
| Registration for |
IEICE-MRIS |
| Paper # |
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| Volume (vol) |
vol.48 |
| Number (no) |
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| Page |
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| #Pages |
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| Date of Issue |
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