SPONTANEOUS STRAIN IN FERROELECTRIC TRIGLYCINE SULFATE CRYSTALS - EPR STUDIES OF VANADYL IMPURITIES .2.

In ferroelectric TGS crystals, EPR spectra of polar VO**2** plus impurities exhibit doublet splittings with unequal intensities on each of the **5**1V hyperfine lines. While the intensity radio depends on vanadyl dipole relaxation in the spontaneous local field E(T), the corresponding strain in TGS lattices is considered to be responsible for the displacement of VO**2** plus axes. The strain tensor e determined from the VO**2** plus spectra is expressed as e equals dE(T), where the tensor d consists of local strain coefficients at the impurity site. Equations, graphs, and tables show data.