EPR study of Gd3+ in a ferroelastic BiVO4 single crystal.

Autor: Yeom, T., Choh, S., Rudowicz, C., Jang, M.
Zdroj: Applied Magnetic Resonance; Jan1999, Vol. 16 Issue 1, p23-32, 10p
Abstrakt: Electron paramagnetic resonance of the Gd3+ ion in a ferroelastic BiVO4 single crystal with a single domain, grown by the Czochralski method, has been investigated at room temperature using a Q-band spectrometer. The rotation patterns of the resonance fields measured in the crystallographic planes are analyzed using a monoclinic spin Hamiltonian. The principal Z-axis of the second-order zero-field splitting tensor D is found to be along the crystallographic b-axis. Spin Hamiltonian parameters together with the principal axes of g and D tensors in the monoclinic plane show that the local site symmetry of Gd3+ ion in BiVO4 crystal is monoclinic and that the Gd3+ ion substitutes for Bi3+ ion. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index