2014 Fiscal Year Final Research Report
Further development of the microwave demagnetization and magnetization system
| Project/Area Number |
23740340
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Kochi University |
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Principal Investigator |
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Keywords | 固体地球物理学 / 地球電磁気学 / 磁性 / マイクロ波 |
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| Outline of Final Research Achievements |
We have developed a demagnetization system using 18 GHz microwaves. Initially the system was planned to be implemented with a 50 W solid state power amplifier (SSPA) but we could only implement a 10 W SSPA due to a limitation of the cost. The system uses a disc-shaped mini rock sample with a diameter of 3 mm and a thickness of 1-2 mm. To control input microwaves and monitor input and diffracted powers, a software was developed using LabView. Final tests revealed that about 60 percent of the initial remanent magnetization of a sample could be demagnetized using the system. It is expected that a complete demagnetization will be possible if the system will be implemented with a 50 W SSPA in future.
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| Free Research Field |
古地磁気学
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