Characterization of the high-spin Mn^2 +-functional centre in BaTiO_3 by means of right-angle wiggling electron paramagnetic resonance spectroscopy

Abstract

The recently introduced right-angle wiggling (RAW) EPR technique is applied to enhance the resolution of complicated high-spin EPR spectra. In particular, the RAW-EPR technique allows for a considerable resolution enhancement of orientationally disordered systems with anisotropic magnetic interactions and provides direct access to spin-Hamiltonian parameters without the need of numerical spectrum simulation. As an example of application, the Mn^2 +-functional centre in polycrystalline BaTiO₃ is studied.

§Dedicated to Arthur Schweiger, good friend and inspiring teacher in magnetic resonance (deceased 4 January 2006).

Keywords:

• Barium titanate
• Manganese doping
• Right-angle wiggling EPR

Notes

§Dedicated to Arthur Schweiger, good friend and inspiring teacher in magnetic resonance (deceased 4 January 2006).