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Formation of high electrical-resistivity thin surface layer on carbonyl-iron powder (CIP) and thermal stability of nanocrystalline structure and vortex magnetic structure of CIP
http://hdl.handle.net/10091/00021246
http://hdl.handle.net/10091/000212462881cbb0-e446-4390-8827-61e555f1c150
名前 / ファイル | ライセンス | アクション |
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15K18047_03.pdf (2.6 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-02-22 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Formation of high electrical-resistivity thin surface layer on carbonyl-iron powder (CIP) and thermal stability of nanocrystalline structure and vortex magnetic structure of CIP | |||||
言語 | ||||||
言語 | eng | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.4944705 | |||||
関連名称 | 10.1063/1.4944705 | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Sugimura, K.
× Sugimura, K.× Miyajima, Y.× Sonehara, M.× Sato, T.× Hayashi, F.× Zettsu, N.× Teshima, K.× Mizusaki, H. |
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信州大学研究者総覧へのリンク | ||||||
氏名 | Sonehara, M. | |||||
URL | http://soar-rd.shinshu-u.ac.jp/profile/ja.WhfCbpkh.html | |||||
出版者 | ||||||
出版者 | AIP Publishing | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | AIP Advances.6(5):055932(2015) | |||||
書誌情報 |
AIP Advances 巻 6, 号 5, p. 055932, 発行日 2016-03-18 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This study focuses on the carbonyl-iron powder (CIP) used in the metal composite bulk magnetic core for high-efficient/light-weight SiC/GaN power device MHz switching dc-dc converter, where the fine CIP with a mean diameter of 1.1 μm is used to suppress the MHz band eddy current inside the CIP body. When applying the CIP to composite core together with the resin matrix, high electrical resistivity layer must be formed on the CIP-surface in order to suppress the overlapped eddy current between adjacent CIPs. In this study, tens nm thick silica (SiO2) was successfully deposited on the CIP-surface by using hydrolysis of TEOS (Si(OC2H5)4). Also tens nm thick oxidized layer of the CIP-surface was successfully formed by using CIP annealing in dry air. The SiC/GaN power device can operate at ambient temperature over 200 degree-C, and the composite magnetic core is required to operate at such ambient temperature. The as-made CIP had small coercivity below 800 A/m (10 Oe) due to its nanocrystalline-structure and had a single vortex magnetic structure. From the experimental results, both nanocrystalline and single vortex magnetic structure were maintained after heat-exposure of 250 degree-C, and the powder coercivity after same heat-exposure was nearly same as that of the as-made CIP. Therefore, the CIP with thermally stable nanocrystalline-structure and vortex magnetic state was considered to be heat-resistant magnetic powder used in the iron-based composite core for SiC/GaN power electronics. | |||||
資源タイプ(コンテンツの種類) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2158-3226 | |||||
権利 | ||||||
権利情報 | © 2016 Authors. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. [https://doi.org/10.1063/1.4944705] | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
WoS | ||||||
表示名 | Web of Science | |||||
URL | http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000377962500165 |