Mossbauer Spectroscopic Study of Neptunium Compounds
Project/Area Number |
17540311
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | Tohoku University |
Principal Investigator |
HOMMA Yoshiya Tohoku University, Institute for Materials Research, Research Associate, 金属材料研究所, 助手 (00260448)
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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)
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Project Period (FY) |
2005 – 2006
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Project Status |
Completed (Fiscal Year 2006)
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Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2006: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2005: ¥2,900,000 (Direct Cost: ¥2,900,000)
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Keywords | Mossbauer Spectroscopy / Magnetism / Neptunium / Actinide / Hyperfine Field / Magnetic Structure / 5f electron / Electronic State / メスバウアー分光 / ^<237>Np / ^<57>Fe / NpFeGa_5 / 四極子相互作用 / 磁気モーメント |
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.
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Report
(3 results)
Research Products
(50 results)
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[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
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Journal Title
Journal of the Physical Society of Japan, 76 (2006), Vol.7 76・07(印刷中)
NAID
Description
「研究成果報告書概要(和文)」より
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[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
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Journal Title
Hyperfine Interactions 168
Pages: 1175-1179
Description
「研究成果報告書概要(和文)」より
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[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
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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
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[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
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Journal Title
Journal of the Physical Society of Japan, 75 (2006) 75
Pages: 94707-94707
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Description
「研究成果報告書概要(和文)」より
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[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
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Journal Title
Journal of the Physical Society of Japan 75
Description
「研究成果報告書概要(欧文)」より
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[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
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Journal Title
Journal of the Physical Society of Japan 75
Pages: 94707-94707
NAID
Description
「研究成果報告書概要(欧文)」より
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[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
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Journal Title
Physical Review B 74
Pages: 144413-144413
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] ^237Np and ^57FeMossbauer study of NpFeGa_52006
Author(s)
Y.Homma, S.Nasu, A.Nakamura, M.Nakada, D.Aoki, N.Metoki, E.Yamamoto, H.Sakai, S.Ikeda, Y.Haga, Y.Onuki, Y.Shiokawa
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Journal Title
Hyperfine Interactions 168・1-3
Pages: 1175-1175
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[Journal Article] Hyperfine Interactions of NpFeGa_5 Observed by ^237Np and ^57Fe Mossbauer Spectroscopy2006
Author(s)
Y.Homma, S.Nasu, A.Nakamura, M.Nakada, D.Aoki, N.Metoki, E.Yamamoto, H.Sakai, S.Ikeda, Y.Haga, Y.Onuki, Y.Shiokawa
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Journal Title
Journal of the Physical Society of Japan, Supplement 75
Pages: 44-44
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[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
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Journal Title
Physica B : Condensed Matter 359
Pages: 1105-1107
Description
「研究成果報告書概要(和文)」より
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[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
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Journal Title
Physica B : Condensed Matter 359
Pages: 1072-1074
Description
「研究成果報告書概要(和文)」より
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[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
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Journal Title
Physical Review B 72
Pages: 14460-14460
Description
「研究成果報告書概要(和文)」より
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[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
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Journal Title
Physica B : Condensed Matter 359
Pages: 1147-1149
Description
「研究成果報告書概要(和文)」より
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[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
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Journal Title
Physica B : Condensed Matter 359
Pages: 1105-1107
Description
「研究成果報告書概要(欧文)」より
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[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
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Journal Title
Physica B : Condensed Matter 359
Pages: 1072-1074
Description
「研究成果報告書概要(欧文)」より
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[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
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Journal Title
Physical Review B 72
Pages: 14460-14460
Description
「研究成果報告書概要(欧文)」より
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[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.
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Journal Title
Physica B : Condensed Matter 359
Pages: 1147-1149
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] Magnetically induced quadrupole splitting and hyperfine field in NpFeGa_5.2005
Author(s)
Homma Y., Nasu S., Aoki D., Kaneko K., Metoki N., Yamamoto E., Nakamura A., Morimoto S., Yasuoka H., Onuki Y., Shiokawa Y.
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Journal Title
Physica B : Condensed Matter. 359
Pages: 1105-1107
Related Report
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[Journal Article] NMR study of NpFeGa_5.2005
Author(s)
Kambe S., Homma Y., Tokunaga Y., Sakai H., Aoki D., Yamamoto E., Nakamura A., Shiokawa Y., Walstedt RE.
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Journal Title
Physica B : Condensed Matter. 359
Pages: 1072-1074
Related Report
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[Journal Article] Magnetic structure of NpTGa5 (T : Fe, Co, Ni).2005
Author(s)
Honda F., Metoki N., Kaneko K., Aoki D., Homma Y., Yamamoto E., Shiokawa Y., Onuki Y., Colineau E., Bernhoeft N., Lander GH.
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Journal Title
Physica B : Condensed Matter. 359
Pages: 1147-1149
Related Report
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[Journal Article] Magnetic structure and metamagnetism in single crystals of NpCoGa_5.2005
Author(s)
Metoki N., Kaneko K., Colineau E., Javorsky P., Aoki D., Homma Y., Boulet P., Wastin F., Shiokawa Y., Bernhoeft N., Yamamoto E., Onuki Y., Rebizant J., Lander GH.
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