Abstract
The changes in the electric-field-gradient tensor q induced by an applied electric field E and stress δ are described by the relation e(Δq)ij=RkijσEk+Tijlmσlm. The magnitudes and absolute signs of the five independent components of Rσ for 35Cl in NaClO3 were measured at 77°K and related to the absolute atomic configuration of the crystal. The numerical values are in units of 109 cm—1, R111σ = —0.42, R222σ = —2.43, R333σ = —2.22, R113σ = —1.53, and R123σ = +3.53, with respect to the following coordinate system at a Cl site. The positive x3 axis points from Na+ to ClO3—, i.e., towards the [111] direction that develops a positive piezoelectric charge for a tension σ33. The positive x1 axis passes through an oxygen site and x2 completes the right-handed set in the plane of the oxygen triangle. The electric field effects at constant stress and at constant strain are nearly equal. They are attributed to variations in the electron orbitals of the chlorate group and to changes in the ionic lattice sums outside this group.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
