抄録
The electric field effect of the electron spin resonance for Gd3+ located at the Sr site of SrTiO3 has been studied. The general characteristics of the induced effect was explained by a polarization-induced spin Hamiltonian of the D2d point symmetry. The induced diagonal splitting was found to be due to the purely rhombic term produced in the c-plane. The values of T11−T12 and T66 were calculated from the induced shift. Furthermore, the directions of c-axes for each domains were changed by the applied electric field. The c-axis canting was explained as due to the R15 term which remarkably varied with temperature and vanished above T≈65 K. These experimental results were analysed and discussed in several respects.
