Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1986-07-01 |
タイトル |
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言語 |
en |
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タイトル |
Magnetic properties of tetrataenite-rich meteorites II |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
著者名(英) |
Nagata, Takesi
Funaki, Minoru
Danon, Jacques A.
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著者所属(英) |
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en |
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National Institute of Polar Research |
著者所属(英) |
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en |
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National Institute of Polar Research |
著者所属(英) |
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en |
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Centro Brasileiro de Pesquisas Fisicas |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Magnetic hysteresis and thermomagnetic characteristics of St. Severin (LL6), Appley Bridge (LL6) and Tuxtuac (LL5) chondrites, which contain tetrataenite in their metallic components, are measured and analyzed in comparison with another tetrataenite-rich chondrite, Yamato-74160 (LL7). The magnetic properties of tetrataenite-rich meteorites are characterized by (a) high magnetic coercive force (H_C) which amounts to 520 Oe for St. Severin and 160 Oe for Appley Bridge, (b) essential flatness up to about 500℃ and then a sharp irreversible drop down to Curie point of the first-run heating thermomagnetic curve. Both characteristic features are broken down to the ordinary features of disordered taenite by a breakdown of tetrataenite structure at elevated temperatures beyond the orderdisorder transition temperature. The natural remanent magnetization (NRM) of tetrataenite-rich meteorites is extremely stable against AF-demagnetization and other magnetic disturbances because of the high magnetic coercivity of tetrataenite. The breakdown processes of ordered tetrataenite structure by heat treatments are experimentally pursued to understand the formation process of tetrataenite phase in meteorites. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00733561 |
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue
巻 41,
p. 364-381,
発行日 1986-07
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