Magnetic computing system
| Project/Area Number |
15360335
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical properties of metals
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| Research Institution | Osaka University |
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Principal Investigator |
NAKATANI Ryoichi Osaka University, Graduate School of Engineering Science, Professor, 大学院・工学研究科, 教授 (60314374)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Masahiko Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (30029160)
ENDO Yasushi Osaka University, Graduate School of Engineering, Assistant Professor, 大学院・工学研究科, 助手 (50335379)
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| Project Period (FY) |
2003 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥15,400,000 (Direct Cost: ¥15,400,000)
Fiscal Year 2004: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2003: ¥11,600,000 (Direct Cost: ¥11,600,000)
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| Keywords | magnetic device / magnetic computer / magnetization process / magnetic state / stray field / computing / NAND gate / NOR gate |
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| Research Abstract |
We have investigated magnetic computing systems that use magnetic phenomena for the computing.
(1)Shapes of the magnetic cells are investigated with using micro magnetics simulation. The results show that elliptic cells with aspect ratio of 1:2 easily transmit the information and hold the information of "0" and "1".
(2)Magnetic logic gate consists of 4 elliptic cells, that size are 80 nm x 40 nm, can compute the information that is put into 3 magnetic cells. The result of the computing is indicated in another magnetic cell. The computing is performed with magnetostatic interaction among the magnetic cells.
(3)When the information that put into one magnetic cell of magnetic logic gate is "0", the magnetic logic gate works as NOR gate. On the other hand, when the information that put into one magnetic cell is "1", the magnetic logic gate works as NAND gate.
(4)The experimental results of fabricating the magnetic logic gates show that the circular cells and elliptic cells have low magnetic switching fields, and thus the circular cells and elliptic cells are suitable for magnetic cells for the point of view of low field working. However, the circular cells have a tendency to have vortex magnetic states. Therefore, the circular cells are not suitable for the magnetic cells of magnetic logic gates.
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Report
(3 results)
Research Products
(50 results)
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[Journal Article] Vortex nucleation and annihilation in Ni-Fe annular dots and cup-shaped dots for high-density memory cells2004
Author(s)
Ryoichi Nakatani, Isao Sasaki, Tetsuo Yoshida, Keiichi Otaki, Yasushi Endo, Yoshio Kawamura, Masahiko Yamamoto, Takashi Takenaga, Sunao Aya, Takeharu Kuroiwa, Sadeh Beysen, Hiroshi Kobayashi
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Journal Title
International Symposium on Advanced Structural and Functional Materials Design
Pages: 7-7
Description
「研究成果報告書概要(和文)」より
Related Report
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[Journal Article] Vortex nucleation and annihilation in Ni-Fe annular dots and cup-shaped dots for high-density memory cells.2004
Author(s)
Ryoichi Nakatani, Isao Sasaki, Tetsuo Yoshida, Keiichi Otaki, Yasushi Endo, Yoshio Kawamura, Masahiko Yamamoto, Takashi Takenaga, Sunao Aya, Takeharu Kuroiwa, Sadeh Beysen, Hiroshi Kobayashi
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Journal Title
International Symposium on Advanced Structural and Functional Materials Design 8
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] Vortex Nucleation and Annihilation in Ni-Re Annular Dots and Cup-shaped Dots for High-Density Memory Cells2004
Author(s)
Ryoichi Nakatani, Isao Sasaki, Tetsuo Yoshida, Keiichi Otaki, Yasushi Endo, Yoshio Kawamura, Masahiko Yamamoto, Takashi Takenaga, Sunao Aya, Takeharu Kuroiwa, Sadeh Beysen, Hiroshi Kobayashi
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Journal Title
International Symposium on Advanced Structural and Functional Materials Design
Pages: 8-8
Related Report
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