Nanometer-scale paleomagnetism by the electron holography
| Project/Area Number |
16K13909
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geochemistry/Cosmochemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
Kimura Yuki 北海道大学, 低温科学研究所, 准教授 (50449542)
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| Co-Investigator(Renkei-kenkyūsha) |
YAMAMOTO Kazuo 一般財団法人ファインセラミックスセンター, ナノ構造研究所, 主任研究員 (80466292)
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| Research Collaborator |
TANIGAKI Toshiaki
NAKAMURA Norihiro
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | ナノ粒子 / 透過電子顕微鏡 / 隕石 / 宇宙塵 / 残留磁化 |
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| Outline of Final Research Achievements |
We applied well known paleomagnetism to a nanometer-scale mineral in a meteorite for determination of temperature and magnetic field at the time of formation of nano-minerals in a mother asteroid of carbonaceous chondrite 4.6 billion years ago based on magnetic remnant observed using the electron holography. We successfully visualized a magnetic remnant of individual nano-minerals, which has been hidden in a total bulk value in case of traditional bulk analysis. We focused on magnetite particles in a carbonaceous meteorite and successfully determined its formation temperature in their parent body based on in-situ electron holography observation in a heating experiment.
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Report
(3 results)
Research Products
(6 results)
