Your browser doesn't support javascript.
loading
Visualization of nanoscale magnetic domain states in the asteroid Ryugu.
Kimura, Yuki; Kato, Takeharu; Tanigaki, Toshiaki; Akashi, Tetsuya; Kasai, Hiroto; Anada, Satoshi; Yoshida, Ryuji; Yamamoto, Kazuo; Nakamura, Tomoki; Sato, Masahiko; Amano, Kana; Kikuiri, Mizuha; Morita, Tomoyo; Kagawa, Eiichi; Yada, Toru; Nishimura, Masahiro; Nakato, Aiko; Miyazaki, Akiko; Yogata, Kasumi; Abe, Masanao; Okada, Tatsuaki; Usui, Tomohiro; Yoshikawa, Makoto; Saiki, Takanao; Tanaka, Satoshi; Terui, Fuyuto; Nakazawa, Satoru; Yurimoto, Hisayoshi; Noguchi, Takaaki; Okazaki, Ryuji; Yabuta, Hikaru; Naraoka, Hiroshi; Sakamoto, Kanako; Watanabe, Sei-Ichiro; Tsuda, Yuichi; Tachibana, Shogo.
Afiliação
  • Kimura Y; Institute of Low Temperature Science, Hokkaido University, Sapporo, 060-0819, Japan. ykimura@lowtem.hokudai.ac.jp.
  • Kato T; Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya, 456-8587, Japan.
  • Tanigaki T; Research and Development Group, Hitachi, Ltd., Hatoyama, Saitama, 350-0395, Japan.
  • Akashi T; Research and Development Group, Hitachi, Ltd., Hatoyama, Saitama, 350-0395, Japan.
  • Kasai H; Research and Development Group, Hitachi, Ltd., Hatoyama, Saitama, 350-0395, Japan.
  • Anada S; Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya, 456-8587, Japan.
  • Yoshida R; Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya, 456-8587, Japan.
  • Yamamoto K; Nanostructures Research Laboratory, Japan Fine Ceramics Center, Nagoya, 456-8587, Japan.
  • Nakamura T; Department of Earth Sciences, Tohoku University, Sendai, 980-8578, Japan.
  • Sato M; Department of Earth and Planetary Science, The University of Tokyo, Tokyo, 113-0033, Japan.
  • Amano K; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Kikuiri M; Department of Earth Sciences, Tohoku University, Sendai, 980-8578, Japan.
  • Morita T; Department of Earth Sciences, Tohoku University, Sendai, 980-8578, Japan.
  • Kagawa E; Department of Earth Sciences, Tohoku University, Sendai, 980-8578, Japan.
  • Yada T; Department of Earth Sciences, Tohoku University, Sendai, 980-8578, Japan.
  • Nishimura M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Nakato A; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Miyazaki A; National Institute of Polar Research, Tachikawa, 190-8518, Japan.
  • Yogata K; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Abe M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Okada T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Usui T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Yoshikawa M; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Saiki T; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Tanaka S; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Terui F; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Nakazawa S; Kanagawa Institute of Technology, Atsugi, 243-0292, Japan.
  • Yurimoto H; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Noguchi T; Department of Natural History Sciences, Hokkaido University, Sapporo, 060-0810, Japan.
  • Okazaki R; Division of Earth and Planetary Sciences, Kyoto University, Kyoto, 606-8502, Japan.
  • Yabuta H; Department of Earth and Planetary Sciences, Kyushu University, Fukuoka, 819-0395, Japan.
  • Naraoka H; Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima, 739-8526, Japan.
  • Sakamoto K; Department of Earth and Planetary Sciences, Kyushu University, Fukuoka, 819-0395, Japan.
  • Watanabe SI; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
  • Tsuda Y; Department of Earth and Environmental Sciences, Nagoya University, Nagoya, 464-8601, Japan.
  • Tachibana S; Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, 252-5210, Japan.
Sci Rep ; 13(1): 14096, 2023 Aug 29.
Article em En | MEDLINE | ID: mdl-37644091
ABSTRACT
In the samples collected from the asteroid Ryugu, magnetite displays natural remanent magnetization due to nebular magnetic field, whereas contemporaneously grown iron sulfide does not display stable remanent magnetization. To clarify this counterintuitive feature, we observed their nanoscale magnetic domain structures using electron holography and found that framboidal magnetites have an external magnetic field of 300 A m-1, similar to the bulk value, and its magnetic stability was enhanced by interactions with neighboring magnetites, permitting a disk magnetic field to be recorded. Micrometer-sized pyrrhotite showed a multidomain magnetic structure that was unable to retain natural remanent magnetization over a long time due to short relaxation time of magnetic-domain-wall movement, whereas submicron-sized sulfides formed a nonmagnetic phase. These results show that both magnetite and sulfide could have formed simultaneously during the aqueous alteration in the parent body of the asteroid Ryugu.
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Sci Rep Ano de publicação: 2023 Tipo de documento: Article
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Sci Rep Ano de publicação: 2023 Tipo de documento: Article