1992 Fiscal Year Final Research Report Summary
Direct observation of dynamic domain behavior and core loss in ultra thin grain oriented silicon steel.
| Project/Area Number |
03452148
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
電子材料工学
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| Research Institution | Tohoku University |
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Principal Investigator |
ARAI Kenichi Res.Inst.Elect.Comm., Tohoku Univ., Professor, 電気通信研究所, 教授 (40006268)
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| Co-Investigator(Kenkyū-buntansha) |
ISHIYAMA Kazushi Res.Inst.Elect.Comm., Tohoku Univ., Assistant, 電気通信研究所, 助手 (20203036)
YAMAGUCHI Masahiro Res.Inst.Elect.Comm., Tohoku Univ., Assistant Professor, 電気通信研究所, 助教授 (10174632)
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| Project Period (FY) |
1991 – 1992
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| Keywords | Ultra thin grain oriented silicon steel / Domain observation / SZM / Dynamic domain behavior / Toroidal core / Core loss / Domain wall velocity / Groove |
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| Research Abstract |
The object in this study is to observe directly the magnetic domain behavior in a toroidal core of ultra thin grain oriented silicon steel under applying rf magnetic field and to make clear the effect of domain wall number and velocity of the domain wall movement on the coarse loss. (1) We can observe the dynamic domain behavior up to 10kHz on the core surfaces and obtain the domain wall number and the velocity of domain wall movement from this observation. (2) By forming grooves perpendicular to the roll direction on the steel surface, the domain wall number in increased and the core loss is decreased.
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