Magnetic properties of tetrataenite-rich stony meteorites
Three chondrites, Yamato-74160 (LL7), ALH-77260 (L3) and St. Severin (LL6), contain considerable amount of the ordered FeNi, tetrataenite, in their metallic components. The thermomagnetic curves of these tetrataenite-rich chondrites are characterized by a very flat heating curve up to 400-450℃ and t...
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National Institute of Polar Research
1982
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ftnipr:oai:nipr.repo.nii.ac.jp:00001393 2023-05-15T17:10:58+02:00 Magnetic properties of tetrataenite-rich stony meteorites Takesi Nagata Minoru Funaki 1982-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1393 http://id.nii.ac.jp/1291/00001393/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1393&item_no=1&attribute_id=18&file_no=1 en eng National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1393 http://id.nii.ac.jp/1291/00001393/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 25, 222-250(1982-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1393&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1982 ftnipr 2022-11-12T19:42:11Z Three chondrites, Yamato-74160 (LL7), ALH-77260 (L3) and St. Severin (LL6), contain considerable amount of the ordered FeNi, tetrataenite, in their metallic components. The thermomagnetic curves of these tetrataenite-rich chondrites are characterized by a very flat heating curve up to 400-450℃ and then an abrupt decrease to Curie point which ranges between 550-580℃. NRM of these chondrites contains a highly stable component which can be hardly demagnetized by alternating magnetic fields up to 1800 Oe peak. The highly stable component is identified to NRM of the tetrataenite phase which has a large magnetic and optical anisotropy. By heating up to 800℃, however, the tetrataenite phase is broken down, by the order-disorder transformation, to the ordinary disordered taenite which has a much weaker magnetic coercivity. Report Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Curie Point ENVELOPE(-63.483,-63.483,-64.833,-64.833) Yamato ENVELOPE(35.583,35.583,-71.417,-71.417) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
Three chondrites, Yamato-74160 (LL7), ALH-77260 (L3) and St. Severin (LL6), contain considerable amount of the ordered FeNi, tetrataenite, in their metallic components. The thermomagnetic curves of these tetrataenite-rich chondrites are characterized by a very flat heating curve up to 400-450℃ and then an abrupt decrease to Curie point which ranges between 550-580℃. NRM of these chondrites contains a highly stable component which can be hardly demagnetized by alternating magnetic fields up to 1800 Oe peak. The highly stable component is identified to NRM of the tetrataenite phase which has a large magnetic and optical anisotropy. By heating up to 800℃, however, the tetrataenite phase is broken down, by the order-disorder transformation, to the ordinary disordered taenite which has a much weaker magnetic coercivity. |
format |
Report |
author |
Takesi Nagata Minoru Funaki |
spellingShingle |
Takesi Nagata Minoru Funaki Magnetic properties of tetrataenite-rich stony meteorites |
author_facet |
Takesi Nagata Minoru Funaki |
author_sort |
Takesi Nagata |
title |
Magnetic properties of tetrataenite-rich stony meteorites |
title_short |
Magnetic properties of tetrataenite-rich stony meteorites |
title_full |
Magnetic properties of tetrataenite-rich stony meteorites |
title_fullStr |
Magnetic properties of tetrataenite-rich stony meteorites |
title_full_unstemmed |
Magnetic properties of tetrataenite-rich stony meteorites |
title_sort |
magnetic properties of tetrataenite-rich stony meteorites |
publisher |
National Institute of Polar Research |
publishDate |
1982 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1393 http://id.nii.ac.jp/1291/00001393/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1393&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(-63.483,-63.483,-64.833,-64.833) ENVELOPE(35.583,35.583,-71.417,-71.417) |
geographic |
Curie Point Yamato |
geographic_facet |
Curie Point Yamato |
genre |
Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Memoirs of National Institute of Polar Research Polar Research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1393 http://id.nii.ac.jp/1291/00001393/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 25, 222-250(1982-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1393&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766067751702495232 |