Key points are not available for this paper at this time.
A study of the 7Li nuclear magnetic resonance in a LiTaO3 single crystal is made and the electric field gradient at the lithium site is determined. Electric-field-gradient calculations indicate that the net charge on the tantalum is +1.21 while that on the oxygen is −0.74. This shows that the tantalate ion is predominantly convalently bonded. The 93Nb resonance in a LiNbO3 single crystal is also studied and the quadrupole coupling constant is found to be 22.02 Mc/sec.
Peterson et al. (Mon,) studied this question.