1989 Fiscal Year Annual Research Report

アクチナイド化合物の探索と結晶育成

Research Project

Project/Area Number	01634005
Research Institution	Tohoku University
Principal Investigator	小松原武美東北大学, 理学部, 教授 (80004331)
Co-Investigator(Kenkyū-buntansha)	安達健五名古屋大学, 理学部, 教授 (40022991) 藤井博信広島大学, 総合科学部, 教授 (30034573) 大貫惇睦筑波大学, 物質工学系, 助教授 (40118659) 鈴木孝東北大学, 理学部, 助教授 (30004344) 都福仁北海道大学, 理学部, 教授 (10000837)
Keywords	ウラン化合物 / 重い電子 / フェルミ液体 / アクチナイド化合物 / ド・バースファンアルヘン効果 / 結晶育成 / 3元系化合物 / 国際規制物資
Research Abstract	本研究は、4f電子の異常な電子相関によって現われる重い電子状態や超伝導等の異常な磁性の発生機構を総合的に研究する重点領域研究「アクチナイド化合物の物性」(代表者:東北大学理学部教授糟谷忠雄)の分担グループとして、超高純度の試料を作成する東北大学金研片平、大洗両研究施設をセンターとする鈴木(謙)班を中心に、全国の10大学の約40名の研究者が利用できる既存の施設を拠点とするサテライト研究班を組織して、アクチナイド化合物の物質探索と純良単結晶の育成を目的として、系統的に研究を行った。研究期間が3年に短縮したため、国際規制物質として厳しい取り扱い規制を受けるアクチナイド化合物の中で、ウラン化合物を中心に研究目的を絞った。今年度は3年継続研究の2年度であるが、予算的にも多少恵まれ、東北大学、広島大学、筑波大学を中心に結晶育成装置も整備され、ウランプニクタイトやウラン3元系化合物(UaTbXc)の新しい物質の探索が系統的に行えるようになり、物理学会での発表の数も年間55編と急激に増加した。主な研究成果は、既知の結晶構造のウラン3元系化合物(UaTbXc)の物性開発に対する研究に各班が集中している感があるが、広島大学の藤井グループが(111)、(112)化合物の異常磁性の研究に、北大の都グループはURu_2Si_2系の超伝導の発生機構に関わる研究に、筑波大学の大貫グループはdHvA効果を目的としたウラン化合物の開発に、また東北大学の小松原グループはUーPtーSi系の物質探索に、鈴木グループはウランプニクタイトの物質探索に、それぞれ成果を挙げた。今年度の後半に結晶育成装置がセンターを中心に整備され、我が国のウラン化合物の研究の著しい後進的状況を回復しつつあるので、最終年度への継続による研究成果の発展が充分に期待される実績を挙げた。

Research Products

(30 results)

All Other

All Publications (30 results)

[Publications] Y.Onuki: "Anomalous Hall Coefficient in the f Electron System U compounds." Journal of Physical Society of Japan. 58. 2119-2125 (1989)
[Publications] Y.Onuki: "Fermi Surface and Cyclotron Mass of CeB_6." Journal of Physical Society of Japan. 58. 3698-3704 (1989)
[Publications] Y.Onuki: "High-Field Magnetoresistance and de Haas-van Alphen Effect in Antiferromagnetic PrB_6 and NdB_6." Phys.Rev.40. 195-207 (1989)
[Publications] H.Amitsuka: "Magnetism and Superconductivity of U(Ru_<1-x>Rh_x)_2Si_2 in the coherent Kondo State." Journal of Magnetism and Magnetic Materials. (1990)
[Publications] H.Amitsuka: "Field Induced Magnetic Transitions in U(Ru_<1-x>Rh_x)_2Si_2 (0【less than or equal】x【less than or equal】1)" Journal of Magnetism and Magnetic Materials. (1990)
[Publications] Y.Kohori: "NMR Study of Pt in U(Pt_<1-x>Pd_x)_3." Journal of Magnetism and Magnetic Materials.
[Publications] Y.Onuki: "Superconductivity in U_5Ge_3 and U_7Ge." Physica B.(1989)
[Publications] Y.Onuki: "Fermi Surface and Cyclotron Mass in UC." Physica B.(1989)
[Publications] Y.Onuki: "Magnetoresistance and de Haas-van Alphen Effect in UC." Journal of Physical Society of Japan. 59. 229-233 (1990)
[Publications] H.Sato: "Some Characteristics of the Thermoelectric Power in Uranium Intermetallic Compounds." Journal of Physical Society of Japan.
[Publications] C.Miyake: "Mutual Oxidation States of U and Mo in U-Mo-O Ternary Oxides" J.Less-Common Metals in press.
[Publications] K.Okuda: "Valence Fluctuation of Ce in α-Ce_3Al." Journal of the Physical Society of Japan. 58. 2630-2633 (1989)
[Publications] K.Okuda: "Synthesis and Characterization of New Ternary Uranium Compound UCr_2Al_<20>." Journal of the Physical Society of Japan. 58. 4296-4299 (1989)
[Publications] T.Takabatake: "Structural and Magnetic Phase Transition in a New Heavy-Fermion Compound UPd_2In." Journal of Physical Society of Japan. 58. 1918-1921 (1989)
[Publications] H.Fujii: "Anomalous Magnetic,Transport and Thermal Properties in Half-Metallic Magnet UNiSn." Journal of Physical Society of Japan. 58. 2495-2500 (1989)
[Publications] H.Kawanaka: "Magnetic Structure of the Half-Metallic Magnet UNiSn." Journal of Physical Society of Japan. 58. 3481-3484 (1989)
[Publications] T.Takabatake: "Physical and Structural Properties of Ternary Uranium Compound in U-Ni-Sn and U-Ni-In System." Journal of Physical Society of Japan. 59. 16-19 (1990)
[Publications] N.Sato: "Magnetic Properties of Heavy Fermion Compound YbCu_<3.5> and YbCu_<4.5>." Physica B.
[Publications] L.P.Regnault: "High Pressure and Polarized Neutron Scattering Study of Magnetic Excitation in CeSb." Physica B.156&157. 798-800 (1990)
[Publications] T.Suzuki: "Ce_4Sb_3:A ferromagnetic system with Kondo behavior." Physica B.(1990)
[Publications] Y.S.Kwon: "Optical Properties of CeSb and LaSb." Physica B.(1990)
[Publications] O.Nakamura: "Magnetic and Transport Properties in Yb_4As_<2.7>Sb_<0.3>." Physica B.(1990)
[Publications] A.Ochiai: "Heavy Fermion Behavior in Yb_4As_3." J.Phys.Soc.Japan.(1990)
[Publications] K.Suzuki: "A Structural Study of the Solid State Vitrification of Metals and Oxides by Ball Milling." J.Non-Crys.Solids,. 112. 23-32 (1989)
[Publications] F.Itoh: "High-resolution Compton Profile Spectrometer For 29.5-keV Xrays with a Combination of Crystal Analyzer and Imaging Plate." Review of Scientific Instruments.60. 2402-2405 (1989)
[Publications] K.Baba: "Dielectric Anomaly in Valence Fluctuating State of Sm_3Se_4." J.Magn.Magn.Mater.76&77. 297-298 (1988)
[Publications] W.A.C.Erkelens: "Inelastic Neutron Scattering Study of the Rare Earth Hexaboride NdB_6." J.Phys.Colloque,Suppl.49,C8. 457-458 (1988)
[Publications] P.Burlet: "A Single Crystal Neutron Scattering Study of the Magnetic ordering in Praseodimium Hexaboride." J.Phys.Colloque,Suppl.49,C8. 459-460 (1988)
[Publications] Y.S.Kwon: "Low Energy Optical Excitation in CeB_6." J.Phys.Colloque,Suppl.49,C8. 737-738 (1988)
[Publications] T.Suzuki: "Noble Technique of Acoustic de Haas-van Alphen Effect and Application to LaB_6." J.Phys.Colloque,Suppl.49,C8. 799-800 (1988)

1989 Fiscal Year Annual Research Report

アクチナイド化合物の探索と結晶育成

Principal Investigator

小松原 武美 東北大学, 理学部, 教授 (80004331)

Research Products

[Publications] Y.Onuki: "Anomalous Hall Coefficient in the f Electron System U compounds." Journal of Physical Society of Japan. 58. 2119-2125 (1989)

[Publications] Y.Onuki: "Fermi Surface and Cyclotron Mass of CeB_6." Journal of Physical Society of Japan. 58. 3698-3704 (1989)

[Publications] Y.Onuki: "High-Field Magnetoresistance and de Haas-van Alphen Effect in Antiferromagnetic PrB_6 and NdB_6." Phys.Rev.40. 195-207 (1989)

[Publications] H.Amitsuka: "Magnetism and Superconductivity of U(Ru_<1-x>Rh_x)_2Si_2 in the coherent Kondo State." Journal of Magnetism and Magnetic Materials. (1990)

[Publications] H.Amitsuka: "Field Induced Magnetic Transitions in U(Ru_<1-x>Rh_x)_2Si_2 (0【less than or equal】x【less than or equal】1)" Journal of Magnetism and Magnetic Materials. (1990)

[Publications] Y.Kohori: "NMR Study of Pt in U(Pt_<1-x>Pd_x)_3." Journal of Magnetism and Magnetic Materials.

[Publications] Y.Onuki: "Superconductivity in U_5Ge_3 and U_7Ge." Physica B.(1989)

[Publications] Y.Onuki: "Fermi Surface and Cyclotron Mass in UC." Physica B.(1989)

[Publications] Y.Onuki: "Magnetoresistance and de Haas-van Alphen Effect in UC." Journal of Physical Society of Japan. 59. 229-233 (1990)

[Publications] H.Sato: "Some Characteristics of the Thermoelectric Power in Uranium Intermetallic Compounds." Journal of Physical Society of Japan.

[Publications] C.Miyake: "Mutual Oxidation States of U and Mo in U-Mo-O Ternary Oxides" J.Less-Common Metals in press.

[Publications] K.Okuda: "Valence Fluctuation of Ce in α-Ce_3Al." Journal of the Physical Society of Japan. 58. 2630-2633 (1989)

[Publications] K.Okuda: "Synthesis and Characterization of New Ternary Uranium Compound UCr_2Al_<20>." Journal of the Physical Society of Japan. 58. 4296-4299 (1989)

[Publications] T.Takabatake: "Structural and Magnetic Phase Transition in a New Heavy-Fermion Compound UPd_2In." Journal of Physical Society of Japan. 58. 1918-1921 (1989)

[Publications] H.Fujii: "Anomalous Magnetic,Transport and Thermal Properties in Half-Metallic Magnet UNiSn." Journal of Physical Society of Japan. 58. 2495-2500 (1989)

[Publications] H.Kawanaka: "Magnetic Structure of the Half-Metallic Magnet UNiSn." Journal of Physical Society of Japan. 58. 3481-3484 (1989)

[Publications] T.Takabatake: "Physical and Structural Properties of Ternary Uranium Compound in U-Ni-Sn and U-Ni-In System." Journal of Physical Society of Japan. 59. 16-19 (1990)

[Publications] N.Sato: "Magnetic Properties of Heavy Fermion Compound YbCu_<3.5> and YbCu_<4.5>." Physica B.

[Publications] L.P.Regnault: "High Pressure and Polarized Neutron Scattering Study of Magnetic Excitation in CeSb." Physica B.156&157. 798-800 (1990)

[Publications] T.Suzuki: "Ce_4Sb_3:A ferromagnetic system with Kondo behavior." Physica B.(1990)

[Publications] Y.S.Kwon: "Optical Properties of CeSb and LaSb." Physica B.(1990)

[Publications] O.Nakamura: "Magnetic and Transport Properties in Yb_4As_<2.7>Sb_<0.3>." Physica B.(1990)

[Publications] A.Ochiai: "Heavy Fermion Behavior in Yb_4As_3." J.Phys.Soc.Japan.(1990)

[Publications] K.Suzuki: "A Structural Study of the Solid State Vitrification of Metals and Oxides by Ball Milling." J.Non-Crys.Solids,. 112. 23-32 (1989)

[Publications] F.Itoh: "High-resolution Compton Profile Spectrometer For 29.5-keV Xrays with a Combination of Crystal Analyzer and Imaging Plate." Review of Scientific Instruments.60. 2402-2405 (1989)

[Publications] K.Baba: "Dielectric Anomaly in Valence Fluctuating State of Sm_3Se_4." J.Magn.Magn.Mater.76&77. 297-298 (1988)

[Publications] W.A.C.Erkelens: "Inelastic Neutron Scattering Study of the Rare Earth Hexaboride NdB_6." J.Phys.Colloque,Suppl.49,C8. 457-458 (1988)

[Publications] P.Burlet: "A Single Crystal Neutron Scattering Study of the Magnetic ordering in Praseodimium Hexaboride." J.Phys.Colloque,Suppl.49,C8. 459-460 (1988)

[Publications] Y.S.Kwon: "Low Energy Optical Excitation in CeB_6." J.Phys.Colloque,Suppl.49,C8. 737-738 (1988)

[Publications] T.Suzuki: "Noble Technique of Acoustic de Haas-van Alphen Effect and Application to LaB_6." J.Phys.Colloque,Suppl.49,C8. 799-800 (1988)

小松原武美東北大学, 理学部, 教授 (80004331)