2007 Fiscal Year Final Research Report Summary
Development of magnetostrictive foil with nano multilayer-hetero magnetic domain driven by lower magnetic field
| Project/Area Number |
17560581
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Hirosaki University |
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Principal Investigator |
OKAZAKI Teiko Hirosaki University, Hirosaki University, Graduate school of Science and Technology, Professer (10003328)
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| Co-Investigator(Kenkyū-buntansha) |
FURUYA Yasubumi Hirosaki University, Graduate school of Science and Technology, Professer (20133051)
ONO Tosiro Hirosaki University, Graduate school of Science and Technology, Professer (30374812)
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| Project Period (FY) |
2005 – 2007
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| Keywords | magnetostriction / Bimorph multi-layers / actuator / micro-gas-valve / lower magnetic field |
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| Research Abstract |
1. Giant magnetostrictive Fe-Ga alloys are expected as actuator/sensor materials with high respective velocity and huge stress created by the magnetostriction. In order to develop magnetostrictive material induced by low magnetic field, we investigated magnetostrictive (positive magnetostriction / negative magnetostriction) bimorph-layers, that is, Fe_<80>Ga_<20> ribbon (146 μm)/ Ni (14 μm) film by magnetron sputtering system. The Fe_<80>Ga_<20> ribbon was prepared by rapidly solidification. Magnetostrictive property of the cantilever-type foil was measured using an optical lever method. Displacement of the upper part of the foil with length of 22 mm was 530 pin under low steady magnetic field of 40 kAm^<-1> and exhibits.- little hysteresis. These magnetostrictive properties also are maintained under low frequency of alternating magnetic field. Moreover, the displacement of the foil at the mechanical resonance frequency exhibits a peak and reaches to 2.0 mm at week magnetic field of 50 Oe.
2. The, magnetostrictive bimorph-layers was applied to micro-gas valve. These cantilever-type actuators can be bent by applying magnetic field parallel to length. A point of the actuator displaced about 300 μm under 500 Oe. The opening and closing action of a gas-valve consisted of magnetostrictive actuator can be controlled remotely by magnetic fields. Flow rate of gas can be driven 50 to 0 cc min^<-1> upon increasing magnetic field to 3500e. Response time after applying of magnetic field is below 0.15 sec, it is fast:
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Research Products
(42 results)
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[Book] 金属2006
Author(s)
岡崎禎子, 冨田晴伸, 古屋泰文
Total Pages
126
Publisher
アグネ技術センター
Description
「研究成果報告書概要(和文)」より
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