Paper Abstract and Keywords |
Presentation |
2015-03-06 17:00
Simulation of STO for microwave-assisted magnetic recording (2)
-- Interaction of write head and STO and optimum injected current -- Takuto Katayama, Yasushi Kanai (Niigata Inst. of Tech.), Kazuetsu Yoshida (Kogakuin Univ.), Simon Greaves, Hiroaki Muraoka (Tohoku Univ.) MR2014-47 Link to ES Tech. Rep. Archives: MR2014-47 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
The spin-torque oscillator (STO) is the most important component in microwave-assisted magnetic recording (MAMR). To realize MAMR a small injected STO current is mandatory, as are large amplitude and stable oscillations. In this report, an isolated STO element (without the write head) and a STO integrated into a write head were analyzed using a micromagnetic analysis. First, the integrated STO was used and the optimum injected currents (Jopt’s) that excite high-frequency magnetic fields were derived for various Gilbert damping factors (α’s) and saturation magnetization (4πMs) in the field generating layer (FGL). Second, Jopt’s were derived for various isolated STO structures. We also tried to reduce Jopt by varying the material characteristics. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Microwave-assisted magnetic recording / spin-torque oscillator / spin injected current / micromagnetic simulation / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 114, March 2015. |
Paper # |
|
Date of Issue |
2015-02-27 (MR) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
MR2014-47 Link to ES Tech. Rep. Archives: MR2014-47 |
Conference Information |
Committee |
MRIS ITE-MMS IEE-MAG |
Conference Date |
2015-03-06 - 2015-03-06 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Nagoya Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Optical recording, etc. |
Paper Information |
Registration To |
MRIS |
Conference Code |
2015-03-MR-MMS-MAG |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Simulation of STO for microwave-assisted magnetic recording (2) |
Sub Title (in English) |
Interaction of write head and STO and optimum injected current |
Keyword(1) |
Microwave-assisted magnetic recording |
Keyword(2) |
spin-torque oscillator |
Keyword(3) |
spin injected current |
Keyword(4) |
micromagnetic simulation |
Keyword(5) |
|
Keyword(6) |
|
Keyword(7) |
|
Keyword(8) |
|
1st Author's Name |
Takuto Katayama |
1st Author's Affiliation |
Niigata Institue of Technology (Niigata Inst. of Tech.) |
2nd Author's Name |
Yasushi Kanai |
2nd Author's Affiliation |
Niigata Institue of Technology (Niigata Inst. of Tech.) |
3rd Author's Name |
Kazuetsu Yoshida |
3rd Author's Affiliation |
Kogakuin University (Kogakuin Univ.) |
4th Author's Name |
Simon Greaves |
4th Author's Affiliation |
Tohoku University (Tohoku Univ.) |
5th Author's Name |
Hiroaki Muraoka |
5th Author's Affiliation |
Tohoku University (Tohoku Univ.) |
6th Author's Name |
|
6th Author's Affiliation |
() |
7th Author's Name |
|
7th Author's Affiliation |
() |
8th Author's Name |
|
8th Author's Affiliation |
() |
9th Author's Name |
|
9th Author's Affiliation |
() |
10th Author's Name |
|
10th Author's Affiliation |
() |
11th Author's Name |
|
11th Author's Affiliation |
() |
12th Author's Name |
|
12th Author's Affiliation |
() |
13th Author's Name |
|
13th Author's Affiliation |
() |
14th Author's Name |
|
14th Author's Affiliation |
() |
15th Author's Name |
|
15th Author's Affiliation |
() |
16th Author's Name |
|
16th Author's Affiliation |
() |
17th Author's Name |
|
17th Author's Affiliation |
() |
18th Author's Name |
|
18th Author's Affiliation |
() |
19th Author's Name |
|
19th Author's Affiliation |
() |
20th Author's Name |
|
20th Author's Affiliation |
() |
Speaker |
Author-1 |
Date Time |
2015-03-06 17:00:00 |
Presentation Time |
25 minutes |
Registration for |
MRIS |
Paper # |
MR2014-47 |
Volume (vol) |
vol.114 |
Number (no) |
no.505 |
Page |
pp.53-58 |
#Pages |
6 |
Date of Issue |
2015-02-27 (MR) |