• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1994 Fiscal Year Final Research Report Summary

Studies for molecular electronic devices based on light-induced phase transitions

Research Project

Project/Area Number 05453051
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 機能・物性・材料
Research InstitutionThe University of Tokyo

Principal Investigator

AWAGA Kunio  Univ. of Tokyo Col.of Arts & Sci. Associate Prof., 教養学部, 助教授 (10202772)

Co-Investigator(Kenkyū-buntansha) OSHIO Hiroki  Univ. of Tohoku. Faculty of Sci. Associate Prof., 理学部, 助教授 (66017865)
SUGAWARA Tadashi  Univ. of Tokyo. Col.of Arts & Sci. Prof., 教養学部, 教授 (50124219)
OKUNO Tsunehisa  Univ. of Tokyo. Col.of Arts & Sci. Research Associate, 教養学部, 助手 (50251327)
Project Period (FY) 1993 – 1994
KeywordsMetal Complexes / Magnetism / Optical Properties / Molecular Devices
Research Abstract

(CH_3)_2CHNH_3^+CuCl_3^- is known to show a thermochromic phase transition at about 50゚C,where the magnetic interaction between the Cu^<2+> ions drastically changes from antiferromagnetic to ferromagnetic. We have measured temperature dependence of the UV-VIS-NIR spectrum of this material, and have found that two bands which appear at 1.3 and 2.2eV at room temperature, completely disappear above the phase transition temperature. Radiation of the two bands were carried out with two kinds of lasers, but observation of the light-induced phase transition was unsuccessful. In future, we need an advanced strategy where the potential surface of the excited state is considered.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] K.Awaga et al.: "Variable magnetic interactions in an organic radical..." Phys.Rev.B. 49. 3975-3981 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Awaga et al.: "Magneto-structural correlations in a series of..." J.Mater.Chem.4. 1377-1385 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Awaga et al.: "Possible reentrant behavior in magnetic properties..." Inorg.Chem.33. 5598-5600 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] W.Fujita and K.Awaga: "Preparation and magnetic property of saponite clay.." J.Chem.Soc.,Chem.Commun.(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Okuno,T.Otsuka,and K.Awaga: "Coexistence of intermolecular ferromagnetic..." J.Chem.Soc.,Chem.Commun.(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Awaga, T.Okuno, A.Yamaguchi, M.Hasegawa, T.Inabe, Y.Maruyama, and N.Wada: ""Variable Magnetic Interactions in an Organic Radical System of (m-N-Methylpyridinium alpha-Nitronyl Nitroxide) X^- : A Possible Kagome Antiferromagnet, "" Phys. Rev. B. Vol. 49. 3975-3981 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.AwageAA.Yamaguchi, T.Okuno, T.Inabe, T.Nakamura, M.Matsumoto, and Y.Maruyama: ""Magneto-Structural Correlation in a Series of the Iodide Salts of p-N-Alkylpyridinium Nitronyl Nitroxides : Dependence of the Iodide-Pyridinium Ring Interaction on the Length of the N-Alkyl Chain"" J.Mater.Chem.Vol.4. 1377-1385 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Awaga, T.Okuno, Y.Maruyama, A.Kobayashi, H.Kobayashi, S.Schenk, and A.E.Underhill: ""Possible'Reentrant'Behavior in Magnetic Properties of TBA[Fe (tdas) _2]Complex, "" Inorg. Chem.Vol. 33. 5598-5600 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] W.Fujita and K.Awaga: ""Preparation and Magnetic Property of Saponite Clay Intercalated with Stable Organic Radicals" J.Chem. Soc. Chem. Commun.(in press.). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Okuno, T.Otsuka, and K.Awaga: ""Coexistence of Intermolecular Ferromagnetic Interaction and [NHN]^+ Hydrogen Bond in N-Protonated m-Pyridyl Nitronyl Nitroxide"" J.Chem. Soc. Chem. Commun.(im press.). (1995)

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

URL: 

Published: 1996-04-15  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi