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| Presentation | 2008-11-21 15:35 [Invited Talk] Development of Electrochemical Technique to Prepare Soft Magnetic Films with High Saturation Magnetic Flux Density and Their Practical Applications Tetsuya Osaka (Waseda Univ.)  MR2008-33 Link to ES Tech. Rep. Archives: MR2008-33 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Magnetic materials are classed as 'soft' if they have a low coercivity. Soft magnetic materials are a central component of electromagnetic devices such as step motors, magnetic sensors, transformers and magnetic recording heads. Miniaturization of these devices requires materials that can develop higher saturation flux density, Bs, so that the necessary flux densities can be preserved on reducing device dimensions, while simultaneously achieving a low coercivity. Here we report the electrochemical preparation of a CoFeNi film with a very high value of Bs=2.1 T and a low coercivity. The favorable properties are achieved by avoiding the need for organic additives in the deposition process, which are typically used to reduce internal stresses. The film also undergoes very small magnetostriction, which is essential to ensure that they are not stressed when an external magnetic field is applied. Electrochemical preparation for soft magnetic material should find applications in miniaturization of electromechanical devices and in high-density magnetic data storage. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | soft magnet film / CoFeNi alloy / electrochemical deposition / magnetic recording head / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, Nov. 2008. | |
| Paper # | ||
| Date of Issue | 2008-11-14 (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 | MR2008-33 Link to ES Tech. Rep. Archives: MR2008-33 |
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| Conference Information | |
| Committee | MRIS ITE-MMS |
| Conference Date | 2008-11-21 - 2008-11-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Waseda University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | HDD and general |
| Paper Information | |
| Registration To | MRIS |
| Conference Code | 2008-11-MR-MMS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of Electrochemical Technique to Prepare Soft Magnetic Films with High Saturation Magnetic Flux Density and Their Practical Applications |
| Sub Title (in English) | |
| Keyword(1) | soft magnet film |
| Keyword(2) | CoFeNi alloy |
| Keyword(3) | electrochemical deposition |
| Keyword(4) | magnetic recording head |
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| 1st Author's Name | Tetsuya Osaka |
| 1st Author's Affiliation | Waseda University (Waseda Univ.) |
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| Speaker | Author-1 |
| Date Time | 2008-11-21 15:35:00 |
| Presentation Time | 40 minutes |
| Registration for | MRIS |
| Paper # | MR2008-33 |
| Volume (vol) | vol.108 |
| Number (no) | no.313 |
| Page | pp.19-24 |
| #Pages | 6 |
| Date of Issue | 2008-11-14 (MR) |
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