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Paper Abstract and Keywords
Presentation 2021-10-08 13:00
Structure and Magnetostrictive Properties of Fe-Co Alloy Single-Crystal Thin Films and Poly-Crystal Thick Films
Yuta Nakamura, Shunsuke Aketa, Hikaru Kondo, Mitsuru Ohtake, Tetsuroh Kawai, Masaaki Futamoto (Yokohama Nat. Univ.), Fumiyoshi Kirino (Tokyo Univ. Arts), Nobuyuki Inaba (Yamagata Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Fe-Co alloys with large magnetostriction have attracted much attention to magnetostrictive vibration power generation device. In the present study, (Fe0.7Co0.3)100–xBx (at. %, x = 0–15) alloy single-crystalline films of 100 nm thickness are prepared on VN(001) single-crystal substrates at a high substrate temperature of 600 °C by UHV magnetron sputtering to investigate the intrinsic magnetostriction property. As the B content increases from 0 to 5 at. %, the magnetostrictive coefficients of (λ100, λ111) increase from (+200×10–6, –10×10–6) to (+310×10–6, +20×10–6). Slight addition of B atom promotes B2 ordering while keeping the crystallographic quality and enhances the magnetostriction. Thickness in micrometer scale is required for practical application. Electroplating is employed to prepare thick Fe100–yCoy (y = 0–95) alloy films. The λ values of Fe70Co30 and Fe30Co70 poly-crystalline thick films are respectively +120×10–6 and +130×10–6. Fe-Co thick films with large magnetostriction are successfully prepared by electroplating.
Keyword (in Japanese) (See Japanese page) 
(in English) Fe-Co Alloy / Single-Crystalline Thin Film / Poly-Crystalline Thin Film / Magnetostriction / / / /  
Reference Info. ITE Tech. Rep.
Paper #  
Date of Issue  
ISSN Print edition: ISSN 1342-6893  Online edition: ISSN 2424-1970
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Conference Information
Committee IEICE-MRIS MMS  
Conference Date 2021-10-08 - 2021-10-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Recording Head, Spintronics, Solid State Memory, Media, etc. 
Paper Information
Registration To IEICE-MRIS 
Conference Code 2021-10-MRIS-MMS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Structure and Magnetostrictive Properties of Fe-Co Alloy Single-Crystal Thin Films and Poly-Crystal Thick Films 
Sub Title (in English)  
Keyword(1) Fe-Co Alloy  
Keyword(2) Single-Crystalline Thin Film  
Keyword(3) Poly-Crystalline Thin Film  
Keyword(4) Magnetostriction  
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1st Author's Name Yuta Nakamura  
1st Author's Affiliation Yokohama National University (Yokohama Nat. Univ.)
2nd Author's Name Shunsuke Aketa  
2nd Author's Affiliation Yokohama National University (Yokohama Nat. Univ.)
3rd Author's Name Hikaru Kondo  
3rd Author's Affiliation Yokohama National University (Yokohama Nat. Univ.)
4th Author's Name Mitsuru Ohtake  
4th Author's Affiliation Yokohama National University (Yokohama Nat. Univ.)
5th Author's Name Tetsuroh Kawai  
5th Author's Affiliation Yokohama National University (Yokohama Nat. Univ.)
6th Author's Name Masaaki Futamoto  
6th Author's Affiliation Yokohama National University (Yokohama Nat. Univ.)
7th Author's Name Fumiyoshi Kirino  
7th Author's Affiliation Tokyo University of the Arts (Tokyo Univ. Arts)
8th Author's Name Nobuyuki Inaba  
8th Author's Affiliation Yamagata University (Yamagata Univ.)
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Speaker
Date Time 2021-10-08 13:00:00 
Presentation Time 25 
Registration for IEICE-MRIS 
Paper #  
Volume (vol) ITE-45 
Number (no)  
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#Pages ITE- 
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