Abstract
The phase transition in (CD3ND3)2 [SnCI6], for which the fluctuation of the order parameter is exceptionally strong among molecular systems, was studied by high-resolution neutron diffraction. The transition was accompanied by contraction of the a and expansion of the c axes as Tc = 154 K was traversed from above. The square root of the c expansion was proportional to the occupancy of one of the deuterium sites which is the order parameter of the transition. The mechanism of this coupling is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 414-416 |
| Number of pages | 3 |
| Journal | Physica B: Physics of Condensed Matter |
| Volume | 213-214 |
| Issue number | C |
| DOIs | |
| State | Published - Aug 1 1995 |
| Externally published | Yes |