Electron paramagnetic resonance of VO<SUP>2+</SUP> in Cd(HCOO)<sub>2</sub>2H<sub>2</sub>O and Pb(HCOO)<sub>2</sub> single crystals

Kalkan H., Köksal F.

SOLID STATE COMMUNICATIONS, no.5, pp.307-310, 1998 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 1998
  • Doi Number: 10.1016/s0038-1098(97)10122-3
  • Journal Name: SOLID STATE COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.307-310
  • Keywords: D. crystal and ligand fields, E. electron paramagnetic resonance
  • Ondokuz Mayıs University Affiliated: No

Abstract

The EPR spectra of VO2+ in Cd(HCOO)(2)2H(2)O and Pb(HCOO)(2) single crystals and powders were studied at room temperature. The angular variations of the spectra indicated that the VO2+ enters Cd2+ and Pb2+ sites in their respective host crystals. Two magnetically inequivalent sites in Cd(HCOO)(2)2H(2)O and Pb(HCOO)(2) for VO2+ were observed. The principal values of the spin-Hamiltonian parameters g and A were determined from the single crystal and powder EPR spectra. Using the EPR parameters and diffuse reflectance data molecular orbital bonding coefficients and crystal field parameters of VO2+ have been evaluated and discussed. (C) 1998 Elsevier Science Ltd.