LATTICE-ION INTERACTIONS OF TI3+ IN CORUNDUM .2. EXPERIMENTALLY OBSERVED EFFECTS OF ELECTRIC FIELDS

The effect of an applied electric field on the electron paramagnetic resonance spectrum of the ground state of the substitutional ion Ti3+ in Al2O3 has been measured. Two parameters characterize the coupling of the spins of 1/2 to the applied electric field. These are obtained by measuring the dependence of the integrated absorption intensity on the orientation of the applied magnetic field in two separate experiments. In the first of these the transition was observed by using a radio-frequency magnetic field as is normally done (magnetic dipole transitions), and in the second by using a radio-frequency electric field (electric dipole transitions). The measured values of the coupling parameters thus obtained are shown to agree well with those obtained theoretically by Bates and Bentley.