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Notes on Magnetic Properties of the Yamato Meteorites
https://nipr.repo.nii.ac.jp/records/833
https://nipr.repo.nii.ac.jp/records/833f117e33f-92e2-4c63-b532-3ae3699d6c6d
名前 / ファイル | ライセンス | アクション |
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KJ00000011807 (2.6 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1975-08-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Notes on Magnetic Properties of the Yamato Meteorites | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Nagata, Takesi
× Nagata, Takesi× Sugiura, Naoharu× Schwerer, F.C. |
|||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
Geophysical Institute, University of Tokyo | ||||||
著者所属(英) | ||||||
en | ||||||
U.S. Steel Corporation Research Laboratory | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The magnetic properties of four typical samples of the Yamato meteorites, which were collected near the Yamato Mountains in Antarctica in 1969,have been examined. These meteorites are (a) enstatite chondrite, (b) Ca-poor achondrite, (c) carbonaceous chondrite (C3), and (d) olivine-bronzite chondrite. The basic magnetic properties of these samples have been determined on the basis of the magnetic hysteresis curves at room temperature and the thermomagnetic curves in a strong magnetic field (H=5.53k. Oe), with additional data of the electron microprobe analysis. The main magnetic constituents in the Yamato meteorites thus evaluated are 3 wt % Ni kamacite and 25 wt % Ni kamacite in (a), almost pure metallic iron and probably maghemite in (b), magnetite in (c), and 6 wt % Ni kamacite and 50 wt % Ni taenite in (d). The natural remanent magnetization (NRM) and its AF-demagnetization characteristics also have been studied for these meteorites. The coercivity of NRM against the AF-demagnetization is in a good positive correlation with the cosmicray exposure age of these meteorites. This result seems to support the Butler-Cox hypothesis that the cosmic-ray exposure is capable of converting the soft isothermal remanent magnetization in meteorites to remanence with a higher coercive force. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 5, p. 91-110, 発行日 1975-08 |