title: Variable temperature EPR studies of Cu²+ and VO²+ doped potassium dihydrogen citrate (C6H7KO7).
abstract: Electron paramagnetic resonance (EPR) studies of single crystals and powder samples of Cu(2+) and VO(2+) doped potassium dihydrogen citrate (PDHC) have been carried out at different temperatures. The temperature-dependant g and A values have been obtained for powder spectra of both Cu(2+) and VO(2+) ions in PDHC and the ground state of Cu(2+) ion has been determined. The powder spectra recorded for Cu(2+) ion in the temperature range 70-298 K are discussed with Jahn-Teller distortion. It is concluded that the g and A values of Cu(2+): PDHC show the static property at low temperatures. For all temperatures, the result g(//)<g(⊥)<g(e) of VO(2+): PDHC indicates that the unpaired electron exists in the d(xy) orbital.
authors.affiliation: Bitlis Eren University, Vocational School of Technical Sciences, 13000 Bitlis, Turkey. zeynep.yarbasi@gmail.com
authors.forename: Zeynep
authors.initials: Z
authors.lastname: Aygun
mesh_terms: D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D004578:Electron Spin Resonance Spectroscopy; D008968:Molecular Conformation; D010087:Oxides / Q000737:chemistry*; D019357:Potassium Citrate / Q000737:chemistry*; D011208:Powders; D013696:Temperature; D017968:Vanadium Compounds / Q000737:chemistry*
chemical_list: D010087:Oxides; D011208:Powders; D017968:Vanadium Compounds; C581824:vanadium dioxide; D003300:Copper; D019357:Potassium Citrate