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| Presentation | 2013-10-25 10:50 [Invited Talk] Giant tunnel magnetoresistance in perfectly lattice-matched magnetic tunnel junctions -- Current status of spinel MgAl2O4-based tunnel barriers -- Hiroaki Sukegawa, Koichiro Inomata, Seiji Mitani (NIMS)  MR2013-18 Link to ES Tech. Rep. Archives: MR2013-18 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Tunnel magnetoresistance (TMR) devices with a monocrystalline MgAl2O4 barrier were successfully developed. The lattice matched heterostructure without any defects at the barrier interfaces was obtained, and TMR enhancement due to a spin-dependent coherent tunneling effect was demonstrated in the structure. In addition, it was found that cation-site disordering into the MgAl2O4 structure significantly increases the TMR. In fact, a giant TMR over 300% at room temperature was achieved by introducing the disordering into the barrier. These results demonstrate the effectiveness of MgAl2O4 as a spintronics material. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Spintronics / tunnel magnetoresistance / Magnetic thin films / Spinel / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, Oct. 2013. | |
| Paper # | ||
| Date of Issue | 2013-10-17 (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 | MR2013-18 Link to ES Tech. Rep. Archives: MR2013-18 |
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| Conference Information | |
| Committee | MRIS ITE-MMS |
| Conference Date | 2013-10-24 - 2013-10-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukuoka-Kotsu-Center Bldg., Hakata Bus Terminal |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Recording head, Spintronics, etc. |
| Paper Information | |
| Registration To | MRIS |
| Conference Code | 2013-10-MR-MMS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Giant tunnel magnetoresistance in perfectly lattice-matched magnetic tunnel junctions |
| Sub Title (in English) | Current status of spinel MgAl2O4-based tunnel barriers |
| Keyword(1) | Spintronics |
| Keyword(2) | tunnel magnetoresistance |
| Keyword(3) | Magnetic thin films |
| Keyword(4) | Spinel |
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| 1st Author's Name | Hiroaki Sukegawa |
| 1st Author's Affiliation | National Institute for Materials Science (NIMS) |
| 2nd Author's Name | Koichiro Inomata |
| 2nd Author's Affiliation | National Institute for Materials Science (NIMS) |
| 3rd Author's Name | Seiji Mitani |
| 3rd Author's Affiliation | National Institute for Materials Science (NIMS) |
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| Speaker | Author-1 |
| Date Time | 2013-10-25 10:50:00 |
| Presentation Time | 50 minutes |
| Registration for | MRIS |
| Paper # | MR2013-18 |
| Volume (vol) | vol.113 |
| Number (no) | no.267 |
| Page | pp.35-40 |
| #Pages | 6 |
| Date of Issue | 2013-10-17 (MR) |
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