Abstract
Dielectric spectroscopy measurements are carried out in the temperature range from about 100 to 145 K on nominally pure ice V as well as on crystals doped with KOH and with HCl in order to investigate their reorientation dynamics at ambient pressure. The orientational glass transition temperature of pure ice V is detected at 123 K, in agreement with previous indications from calorimetry. KOH doped ice V displays an about 60-fold enhanced hydrogen dynamics and the dipolar relaxation induced by HCl doping is even by a factor of about 40 000 faster than that of the undoped material. The phase transition of HCl doped ice V to ice XIII is accompanied by a significant reorientational slowdown and a pronounced freeze-out of the electrical susceptibility. The results obtained near this transition are discussed in relation to other order/disorder ice pairs such as ice I/XI and ice XII/XIV.
| Original language | English |
|---|---|
| Article number | 184306 |
| Journal | Physical Review B |
| Volume | 94 |
| Issue number | 18 |
| DOIs | |
| State | Published - 2016 |
| Externally published | Yes |
Funding
Support of this project by the Deutsche Forschungsgemeinschaft (DFG) under Grant No. BO1301/12-1 and by the Austrian Science Fund (FWF) under Project I1392 is gratefully acknowledged. V.F.L. is a recipient of a DOC fellowship of the Austrian Academy of SciencesAW at the Institute of Physical Chemistry, University of Innsbruck. We are indebted to Katrin Amann-Winkel for help in the initial stages of the current work.