Sa. Sveleba et al., NEW EFFECT IN THE INCOMMENSURATE PHASE CAUSED BY THE CRYSTAL SHAPE, Physica status solidi. a, Applied research, 147(2), 1995, pp. 625-632
The influence of the crystal form on its dielectric properties is inve
stigated in the [N(CH3)4]2ZnCl4 crystals. The crystals are cut in the
shape of wedges along the modulation c-axis. The occurrence of anomali
es on the temperature dependences of capacity C(a) and dielectric loss
tangent tg delta for these incommensurate crystals is caused by the g
radients of the incommensurate structure amplitude and phase.