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    The electronic transport properties of the [Co2(L)L′(dioxane)2(NO3)2](NO3)2 complex
    (Elsevier Science Bv, 2003) Yakuphanoglu, F.; Aydogdu, Y.; Gomleksiz, M.; Sekerci, M.; Agan, S.; Alkan, C.
    The temperature dependence of the electrical conductivity, microstructure and crystal structure properties of the [Co,(L)L'(dioxane)(2)(NO3)(2)](NO3)(2) complex was investigated. The X-ray diffraction showed that the [Co,(L)L'(dioxane)(2) (NO3)(2)](NO3)(2) has a triclinic structure. Temperature dependence of the conductivity curve of the complex exhibited two conduction regions, and while increase of conductivity with temperature in the first region is of hopping conduction which takes place in localized states, the conduction in the second region is of Arrhenius-type. These conduction mechanisms are related to intermolecular and intramolecular conduction progresses. The electrical conductivity of the [Co-2(L)L'(dioxane)(2)(NO3)(2)](NO3)(2) complex was 2.57 x 10(-7) (S/cm) at room temperature with activation energy of 0.46 eV which showed semiconductivity behavior. (C) 2002 Published by Elsevier Science B.V.
  • Küçük Resim
    Öğe
    XRD, SEM studies and electrical properties of metal complexes, including sodium oxalate ligand (Na2C2O4)
    (Elsevier Science Bv, 2002) Aydoğdu, Y.; Yakuphanoğlu, F.; Aydoğdu, A.; Sekerci, M.; Alkan, C.; Aksoy, I.
    The crystal structure, microstructure, and electrical properties of inorganic semiconductors were based on metal complexes, including sodium oxalate ligand. The crystal structure of samples at room temperature was examined using X-ray diffraction (XRD). X-ray diffraction showed that the three samples have different crystal structures. The microstructures of the samples have also been investigated by scanning electron microscopy (SEM). These samples have been found to be inorganic semiconductors having moderate conductivities and activation energies. Room temperature conductivities of O-Co, O-Ni, and O-Cu. samples were 6.43 x 10(-9), 3.85 x 10(-7), and 2.10 x 10(-6) S/cm, respectively. The mobility and concentration of the carriers were calculated by means of current-voltage curve samples in the space charge limited region (SCLC). (C) 2002 Elsevier Science B.V. All rights reserved.