Abstract
The deuteron quadrupole coupling tensors and spin-lattice relaxation rates have been determined as a function of temperature both in the paraelectric and in the ferroelectric phase of CsP. The results demonstrate the order-disorder nature of the transition and show the presence of dynamic short-range ordered clusters along the O-H(2) · · · O chains, which are responsible for the H(2) deuteron . The noninteracting H(2) deuteron intrabond jump time equals 0.9 × s, and is of the same order as in KP. The anomalously short values of both the H(1) and the H(2) deuteron are the result of an "anisotropy slowing down" of the order-parameter fluctuations due to the pseudo-one-dimensional nature of the transition.
- Received 12 October 1979
DOI:https://doi.org/10.1103/PhysRevB.21.2695
©1980 American Physical Society