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2006 Fiscal Year Final Research Report Summary

Mossbauer Spectroscopic Study of Neptunium Compounds

Research Project

Project/Area Number 17540311
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionTohoku University

Principal Investigator

HOMMA Yoshiya  Tohoku University, Institute for Materials Research, Research Associate, 金属材料研究所, 助手 (00260448)

Co-Investigator(Kenkyū-buntansha) NAKDA Masami  Japan Atomic Energy Association, Nuclear Science and Engineering Directorate, Senior Researcher, 原子力基礎工学研究部門, 副主任研究員 (60370441)
NASU Saburo  Osaka University, Graduate School of Engineering Science, Emeritus Professor, 大学院基礎工学研究科, 名誉教授 (00030057)
AOKI Dai  Institute for Materials Research, Research Associate, 金属材料研究所, 助手 (30359541)
NAKAMURA Akio  Japan Atomic Energy Association, Advance Science Research Center, Principal Investigator, 先端基礎研究センター, 主任研究員 (80370443)
SHIOKAWA Yoshinobu  Institute for Materials Research, Professor, 金属材料研究所, 教授 (50111307)
Project Period (FY) 2005 – 2006
KeywordsMossbauer Spectroscopy / Magnetism / Neptunium / Actinide / Hyperfine Field / Magnetic Structure / 5f electron / Electronic State
Research Abstract

Mossbauer spectroscopy has been performed for the neptunium compounds, which were made by flux method. Especially, We applied the Np-237 Mossbauer spectroscopy, which was used only for the complex compounds in Japan, to elucidate the electronic and magnetic state of NpTGa_5. Fe-57 Mossbauer spectroscopy was adapted to NpFeGa_5, in which Fe sites also has magnetic moment in addition to Np sites. NpFeGa5 becomes antiferromagnet below 117 K and Hyperfine field reaches to 1.9 T at 4.2 K. This result consists with the neutron diffraction experiment by Metoki et al. Hyperfine field at Np sites was determined as 204 T indicating that Np atom has a magnetic moment of 0.94 μ_B.Physical properties such as electrical resistivity, magnetic susceptibility and specific heat have measured for these compounds.

  • Research Products

    (38 results)

All 2007 2006 2005

All Journal Article (38 results)

  • [Journal Article] Electrical and Magnetic Properties of an Ising-type Ferromagnet NpSb_22007

    • Author(s)
      Y.Homma, D.Aoki, Y.Haga, H.Sakai, S.Ikeda, E.Yamamoto, A.Nakamura, Y.Shiokawa, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan, 76 (2006), Vol.7 76・07(印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Electrical and Magnetic Prop erties of an Ising-typ e Ferromagnet NpSb_22007

    • Author(s)
      Y.Homma, D.Aoki, Y.Haga, H.Sakai, S.Ikeda, E.Yamamoto, A.Nakamura, Y.Shiokawa, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan Vol.7 (in press).

      Pages: 76

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Np-237 and Fe-57 Mossbauer study of NpFeGa_52006

    • Author(s)
      Y.Homma, M.Nakada, A.Nakamura, S.Nasu, D.Aoki, H.Sakai, S.Ikeda, E.Yamamoto, Y.Haga, Y.Onuki, Y.Shiokawa
    • Journal Title

      Hyperfine Interactions 168

      Pages: 1175-1179

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hyperfine Interactions of NpFeGa_5 Observed by ^<237>Np and ^<57>Fe Mossbauer Spectroscopy2006

    • Author(s)
      Y.Homma, Saburo Nasu, A.Nakamura, Masami Nakada, D.Aoki, Naoto Metoki, E.Yamamoto, H.Sakai, S.Ikeda, Y.Haga, Y.Onuki, Y.Shiokawa
    • Journal Title

      Journal of the Physical Society of Japan 75(Supplement)

      Pages: 44-46

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Single Crystal Growth and Magnetic Properties of Neptunium Compounds.2006

    • Author(s)
      D.Aoki, Y.Homma, H.Sakai, S.Ikeda, Y.Shiokawa, E.Yamamoto, A.Nakamura, Y.Haga, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan 75(Supplement)

      Pages: 36-38

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Magnetic properties and heavy electronic states in the antiferromagnet NpPtGa_5.2006

    • Author(s)
      D.Aoki, Y.Haga, Y.Homma, Y.Shiokawa, E.Yamamoto, A.Nakamura, R.Settai, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan 75

      Pages: 14715

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Characteristic high-field magnetization in a transuranium antiferromagnet NpRhGa_5.2006

    • Author(s)
      K.Sugiyama, H.Nakashima, D.Aoki, Y.Haga, E.Yamamoto, A.Nakamura, Y.Homma, Y.Shiokawa, K.Kindo, M.Hagiwara, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan, 75 (2006) 75

      Pages: 94707

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Neutron scattering study of magnetic structure and metamagnetic transition between low- and high-moment states of NpNiGa_52006

    • Author(s)
      F.Honda, N.Metoki, K.Kaneko, S.Jonen, E.Yamamoto, D.Aoki, Y.Homma, Y.Haga, Y.Shiokawa, Y.Onuki
    • Journal Title

      Physical Review B 74

      Pages: 144413

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Magnetic phase diagram and change in 5f electronic states in NpNiGa_5.2006

    • Author(s)
      F.Honda, N.Metoki, K.Kaneko, S.Jonen, E.Yamamoto, D.Aoki, Y.Homma, Y.Shiokawa, Y.Onuki
    • Journal Title

      Physica B : Condensed Matter 378-380

      Pages: 1009-1010

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Magnetic structure and successive phase transition in NpRhGa_5.2006

    • Author(s)
      S.Jonen, N.Metoki, F.Honda, K.Kaneko, D.Aoki, Y.Homma, E.Yamamoto, Y.Haga, Y.Shiokawa, Y.Onuki
    • Journal Title

      Physica B : Condensed Matter 378-380

      Pages: 1018-1020

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Neutron diffraction study of magnetic structure and successive 5f electronic transition in the itinerant antiferromagnet NpRhGa_5.2006

    • Author(s)
      S.Jonen, N.Metoki, F.Honda, K.Kaneko, E.Yamamoto, Y.Haga, D.Aoki, Y.Homma, Y.Shiokawa, Y.Onuki
    • Journal Title

      Physical Review 74

      Pages: 144412

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A-Type Antiferromagnetic Ordering and the Transition of the 5f Electronic State Accompanied by Unusual Moment Reorientation in NpRhGa_5.2006

    • Author(s)
      S.Jonen, N.Metoki, F.Honda, K.Kaneko, E.Yamamoto, Y.Haga, D.Aoki, Y.Homma, Y.Shiokawa, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan 75(Supplement)

      Pages: 41-43

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A magnetic compton scattering study of NpNiGa_5.2006

    • Author(s)
      S.Tsutsui, Y.Sakurai, M.Itou, D.Aoki, E.Yamamoto, Y.Homma, Y.Haga, A.Nakamura, Y.Shiokawa, Y.Onuki
    • Journal Title

      Physica B : Condensed Matter 378-380

      Pages: 1011-1012

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hyperfine Interactions of NpFeGa_5 Observed by ^<237>Np and ^<57>Fe Mossbauer Spectroscopy2006

    • Author(s)
      Y.Homma, Saburo Nasu, A.Nakamura, Masami Nakada, D.Aoki, Naoto Metoki, E..Yamamoto, H.Sakai, S.Ikeda, Y.Haga, Y.Onuki, Y.Shiokawa
    • Journal Title

      Journal of the Physical Society of Japan 75

      Pages: Supplement 44-46

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Single Crystal Growth and Magnetic Properties of Neptunium Compounds2006

    • Author(s)
      D.Aoki, Y.Homma, H.Sakai, S.Ikeda, Y.Shiokawa, E..Yamamoto, A.Nakamura, Y.Haga, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan 75

      Pages: Supplement 36-38

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Characteristic high-field magnetization in a transuranium antiferromagnet NpRhGa_5.2006

    • Author(s)
      K.Sugiyama, H.Nakashima, D.Aoki, Y.Haga, E.Yamamoto, A.Nakamura, Y.Homma, Y.Shiokawa, K.Kindo, M.Hagiwara, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan 75

      Pages: 94707

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Neutron scattering study of magnetic structure and metamagnetic transition between low- and high-moment states of NpNiGa_5-art. no. 144413', Physical Review B, 7414 (2006), p. 4413.2006

    • Author(s)
      F.Honda, N.Metoki, K.Kaneko, S.Jonen, E.Yamamoto, D.Aoki, Y.Homma, Y.Haga, Y.Shiokawa, Y.Onuki
    • Journal Title

      Physical Review B 74

      Pages: 144413

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Magnetic phase diagram and change in 5f electronic states in NpNiGa_52006

    • Author(s)
      F.Honda, N.Metoki, K.Kaneko, S.Jonen, E.Yamamoto, D.Aoki, Y.Homma, Y.Shiokawa, Y Onuki
    • Journal Title

      Physica B : Condensed Matter 378-380

      Pages: 1009-1010

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Magnetic structure and successive phase transition in NpRhGa_52006

    • Author(s)
      S.Jonen, N.Metoki, F.Honda, K.Kaneko, D.Aoki, Y.Homma, E.Yamamoto, Y.Haga, Y.Shiokawa, Y.Onuki
    • Journal Title

      Physica B : Condensed Matter 378-380

      Pages: 1018-1020

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Neutron diffraction study of magnetic structure and successive 5f electronic transition in the itinerant antiferromagnet NpRhGa_5.2006

    • Author(s)
      S.Jonen, N.Metoki, F.Honda, K.Kaneko, E.Yamamoto, Y.Haga, D.Aoki, Y.Homma, Y.Shiokawa, Y.Onuki
    • Journal Title

      Physical Review B 74

      Pages: 144412

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A-Type Antiferromagnetic Ordering and the Transition of the 5f Electronic State Accompanied by Unusual Moment Reorientation in NpRhGa_52006

    • Author(s)
      S.Jonen, N.Metoki, F.Honda, K.Kaneko, E..Yamamoto, Y.Haga, D.Aoki, Y.Homma, Y.Shiokawa, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan 75

      Pages: Supplement 41-43

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A magnetic compton scattering study of NpNiGa_52006

    • Author(s)
      S.Tsutsui, Y.Sakurai, M.Itou, D.Aoki, E.Yamamoto, Y.Homma, Y.Haga, A.Nakamura, Y.Shiokawa, Y.Onuki
    • Journal Title

      Physica B : Condensed Matter 378-380

      Pages: 1011-1012

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Magnetically induced quadrupole splitting and hyperfine field in NpFeGa_5.2005

    • Author(s)
      Y.Homma, S.Nasu, D.Aoki, K.Kaneko, N.Metoki, E.Yamamoto, A.Nakamura, S.Morimoto, H.Yasuoka, Y.Onuki, Y.Shiokawa
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1105-1107

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Magnetic and electrical properties of NpTGa_5 (T = Fe, Rh and Ni).2005

    • Author(s)
      D.Aoki, Y.Homma, Y.Shiokawa, H.Sakai, E.Yamamoto, A.Nakamura, Y.Haga, R.Settai, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan 74

      Pages: 2323-2331

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Quasi-two-dimensional Fermi surfaces in the flat antiferromagnetic Brillouin zone of NpRhGa_5.2005

    • Author(s)
      D.Aoki, H.Yamagami, Y.Homma, Y.Shiokawa, E.Yamamoto, A.Nakamura, Y.Haga, R.Settai, Y.Onuki
    • Journal Title

      Journal of Physics-Condensed Matter 17

      Pages: L169-L175

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] de Haas-van Alphen effect in NpCoGa_5.2005

    • Author(s)
      D.Aoki, Y.Homma, Y.Shiokawa, E.Yamamoto, A.Nakamura, Y.Haga, R.Settai, Y.Onuki
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1084-1086

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] NMR study of NpFeGa_5.2005

    • Author(s)
      S.Kambe, Y.Homma, Y.Tokunaga, H.Sakai, D.Aoki, E.Yamamoto, A.Nakamura, Y.Shiokawa, R.E.Walstedt
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1072-1074

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Magnetic structure and metamagnetism in single crystals of NpCoGa_5.2005

    • Author(s)
      N.Metoki, K.Kaneko, E.Colineau, P.Javorsky, D.Aoki, Y.Homma, P.Boulet, F.Wastin, Y.Shiokawa, N.Bernhoeft, E.Yamamoto, Y.Onuki, J.Rebizant, G.H.Lander
    • Journal Title

      Physical Review B 72

      Pages: 014460

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Electrical and magnetic properties in NpTGa_5 (T = Fe, Co, Ni).2005

    • Author(s)
      E.Yamamoto, D.Aoki, Y.Homma, Y.Shiokawa, Y.Haga, A.Nakamura, Y.Onuki
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1099-1101

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Magnetic structure of NpTGa_5 (T : Fe, Co, Ni)2005

    • Author(s)
      F.Honda, N.Metoki, K.Kaneko, D.Aoki, Y.Homma, E.Yamamoto, Y.Shiokawa, Y.Onuki, E.Colineau, N.Bernhoeft, G.H.Lander
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1147-1149

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Magnetically induced quadrupole splitting and hyperfine field in NpFeGa_52005

    • Author(s)
      Y.Homma, S.Nasu, D.Aoki, K.Kaneko, N.Metoki, E.Yamamoto, A.Nakamura, S.Morimoto, H.Yasuoka, Y.Onuki, Y.Shiokawa
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1105-1107

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Magnetic and electrical properties of NpTGa_5 (T = Fe, Rh and Ni)2005

    • Author(s)
      D.Aoki, Y.Homma, Y.Shiokawa, H.Sakai, E.Yamamoto, A.Nakamura, Y.Haga, R.Settai, Y.Onuki
    • Journal Title

      Journal of the Physical Society of Japan 74

      Pages: 2323-2331

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Quasi-two-dimensional Fermi surfaces in the flat antiferromagnetic Brillouin zone of NpRhGa_5 studied by dHvA experiments and energy band calculations2005

    • Author(s)
      D.Aoki, H.Yamagami, Y.Homma, Y.Shiokawa, E.Yamamoto, A.Nakamura, Y.Haga, R.Settai, Y.Onuki
    • Journal Title

      Journal of Physics-Condensed Matter 17

      Pages: L169-L175

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] de Haas-van Alphen effect in NpCoGa_52005

    • Author(s)
      D.Aoki, Y.Homma, Y.Shiokawa, E.Yamamoto, A.Nakamura, Y.Haga, R.Settai, Y.Onuki
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1084-1086

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] NMR study of NpFeGa_52005

    • Author(s)
      S.Kambe, Y.Homma, Y.Tokunaga, H.Sakai, D.Aoki, E.Yamamoto, A.Nakamura, Y.Shiokawa, R.E.Walstedt
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1072-1074

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Magnetic structure and metamagnetism in single crystals of NpCoGa_5-art. no. 0144602005

    • Author(s)
      N.Metoki, K.Kaneko, E.Colineau, P.Javorsky, D.Aoki, Y.Homma, P.Boulet, F.Wastin, Y.Shiokawa, N.Bernhoeft, E.Yamamoto, Y.Onuki, J.Rebizant, G H.Lander
    • Journal Title

      Physical Review B 72

      Pages: 014460

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Electrical and magnetic properties in NpTGa_5 (T = Fe, Co, Ni)2005

    • Author(s)
      E.Yamamoto, D.Aoki, Y.Homma, Y.Shiokawa, Y.Haga, A.Nakamura, Y.Onuki
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1099-1101

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Lander, 'Magnetic structure of NpTGa_5 (T : Fe, Co, Ni)2005

    • Author(s)
      F.Honda, N.Metoki, K.Kaneko, D.Aoki, Y.Homma, E.Yamamoto, Y.Shiokawa, Y.Onuki, E.Colineau, N.Bernhoeft, G H.
    • Journal Title

      Physica B : Condensed Matter 359

      Pages: 1147-1149

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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