Electron paramagnetic resonance study of VO2+ in tetragonal mixed crystals Ca(HCOO)2-Sr(HCOO)2

Kalkan H., Köksal F.

Physica Status Solidi (B) Basic Research, vol.205, no.2, pp.651-656, 1998 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 205 Issue: 2
  • Publication Date: 1998
  • Journal Name: Physica Status Solidi (B) Basic Research
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.651-656
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

A detailed study of VO2+ in tetragonal mixed crystals Ca(HCOO)2-Sr(HCOO)2 has been carried out at room temperature. Impurity sites in the unit cell and the molecular structure of the vanadyl complexes in the crystal are discussed. The spin-Hamiltonian parameters have been calculated from single crystal as well as the powder spectra. The g and A tensors are found to be axially symmetric. Correlating the optical and EPR data the molecular orbital coefficients and crystal-field parameters are calculated and discussed.