Pressure effect on superprotonic phase transition in mixed [(NH4)xRb1-x]3H(SO4)2 crystals

Authors
Sinitsyn, VV Baranov, A Ponyatovsky, EG
Citation
Vv. Sinitsyn et al., Pressure effect on superprotonic phase transition in mixed [(NH4)xRb1-x]3H(SO4)2 crystals, SOL ST ION, 136, 2000, pp. 167-171
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
01672738 → ACNP
Volume
136
Year of publication
2000
Pages
167 - 171
Database
ISI
SICI code
0167-2738(200011)136:<167:PEOSPT>2.0.ZU;2-U
Abstract
The pressure effect on the superprotonic phase transition temperatures is s tudied for the series of [(NH4)(x)Rb1-x](3)H(SO4)(2) mixed crystals, x = 0, 0.2, 0.5, 0.8, and 1. It is shown that the R (3) over barm superprotonic p hase does not occur in Rb3H(SO4)(2) at atmospheric pressure, but becomes st able at a pressure greater than 0.14 GPa. The scaling correlation is found between the A2/a-R (3) over barm transition lines in all P-T phase diagrams studied. (C) 2000 Elsevier Science B.V. All rights reserved.