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Paper Abstract and Keywords
Presentation 2018-07-06 15:45
Micromagnetic simulation of current-driven domain wall motion along nanowire with local magnetic field assistance
Mayumi Kawana, Mitsunobu Okuda, Norihiko Ishii, Yasuyoshi Miyamoto (NHK)
Abstract (in Japanese) (See Japanese page) 
(in English) A current-driven domain wall motion in magnetic nanowire with perpendicular anisotropy has been utilized in MRAM. We also believe it can contribute to realize ultra-high-speed storage, however, large current density is required to drive magnetic domain walls fast. In this study, in order to reduce the driving current, we estimated the current-driven domain wall velocity dependence of the applied magnetic field direction and strength from a micromagnetic simulation using a Landau–Lifshitz–Gilbert(LLG) equation with spin transfer torque term. The magnetic domain wall velocity was increased by use of adequate local magnetic field modulation. Our analyses indicate that in-plane component of the applied field is effective for fast domain wall driving.
Keyword (in Japanese) (See Japanese page) 
(in English) Current Induced Domain Wall Motion / Magnetic Nanowire / Magnetic field assistance / Magnetic Memory / Magnetic Random Access Memory / / /  
Reference Info. ITE Tech. Rep., vol. 42, no. 20, MMS2018-47, pp. 19-23, July 2018.
Paper # MMS2018-47 
Date of Issue 2018-06-29 (MMS) 
ISSN Print edition: ISSN 1342-6893    Online edition: ISSN 2424-1970
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Conference Information
Committee IEICE-MRIS MMS  
Conference Date 2018-07-06 - 2018-07-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Waseda Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Solid State Memory, Media, etc. 
Paper Information
Registration To MMS 
Conference Code 2018-07-MRIS-MMS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Micromagnetic simulation of current-driven domain wall motion along nanowire with local magnetic field assistance 
Sub Title (in English)  
Keyword(1) Current Induced Domain Wall Motion  
Keyword(2) Magnetic Nanowire  
Keyword(3) Magnetic field assistance  
Keyword(4) Magnetic Memory  
Keyword(5) Magnetic Random Access Memory  
1st Author's Name Mayumi Kawana  
1st Author's Affiliation Japan broadcasting corporation (NHK)
2nd Author's Name Mitsunobu Okuda  
2nd Author's Affiliation Japan broadcasting corporation (NHK)
3rd Author's Name Norihiko Ishii  
3rd Author's Affiliation Japan broadcasting corporation (NHK)
4th Author's Name Yasuyoshi Miyamoto  
4th Author's Affiliation Japan broadcasting corporation (NHK)
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Speaker Author-1 
Date Time 2018-07-06 15:45:00 
Presentation Time 25 minutes 
Registration for MMS 
Paper # MMS2018-47 
Volume (vol) vol.42 
Number (no) no.20 
Page pp.19-23 
Date of Issue 2018-06-29 (MMS) 

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