title: An EPR and optical absorption study of Cu(2+) doped in disodium malonate trihydrate single crystal.
abstract: Single crystals and powder electron paramagnetic resonance (EPR) studies of Cu(2+)-doped disodium malonate trihydrate [C(3)H(2)O(4)Na(2).3H(2)O] have been carried out at room temperature. The angular variation of the disodium malonate trihydrate single crystal have shown that two different Cu(2+) complexes are located in different chemical environments, and each environment contains one magnetically inequivalent Cu(2+) sites in distinct orientations occupying substitutional positions in the lattice and show very high angular dependence. The principal values of the g and the hyperfine tensors were determined and were found to be in agreement with the literature values. Crystal field around the Cu(2+) ion is nearly rhombic. The optical absorption studies show two bands at 603nm (16584cm(-1)) and 890nm (11236cm(-1)) which confirm the rhombic symmetry. The crystals field parameters and than the wave function are determined.
authors.affiliation: Atatürk University, Department of Physics, Erzurum, Turkey.
authors.forename: Zeynep
authors.initials: Z
authors.lastname: Yarbaşi
authors.forename: Bünyamin
authors.initials: B
authors.lastname: Karabulut
authors.forename: Abdulhalik
authors.initials: A
authors.lastname: Karabulut
mesh_terms: D000042:Absorption; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D004578:Electron Spin Resonance Spectroscopy; D008314:Malonates / Q000737:chemistry*; D055095:Optics and Photonics; D012964:Sodium / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D008314:Malonates; D014867:Water; D003300:Copper; C030290:malonic acid; D012964:Sodium