Abstract
Dielectric relaxation in quadrupolar glasses is dominated at low temperatures by thermal activation over local anisotropy barriers produced by the quadrupolar freezing. The distribution of barrier heights V vanishes linearly as V0 at all temperatures due to the repulsion of levels of the random internal stress tensor. A further shift of V to higher values occurs as T decreases due to correlations. These results are compared with recent dielectric measurements in (KBr)0.5(KCN)0.5.
| Original language | English |
|---|---|
| Pages (from-to) | 2073-2076 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 33 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1986 |
| Externally published | Yes |