EFFECT OF DEUTERON SUBSTITUTION ON STRUCTURAL PHASE-TRANSITION IN (NH4)(2)MCL6

Authors
PELZL J ARNSCHEIDT B DIMITROPOULOS C SEO YM
Citation
J. Pelzl et al., EFFECT OF DEUTERON SUBSTITUTION ON STRUCTURAL PHASE-TRANSITION IN (NH4)(2)MCL6, Journal of the Korean Physical Society, 32, 1998, pp. 87-90
Citations number
7
Categorie Soggetti
Physics
Journal title
Journal of the Korean Physical Society → ACNP
ISSN journal
03744884
Volume
32
Year of publication
1998
Part
1
Supplement
S
Pages
87 - 90
Database
ISI
SICI code
0374-4884(1998)32:<87:EODSOS>2.0.ZU;2-0
Abstract
Substitution of hydrogen by deuterium induces additional phase transit ions in some ammonium hexahalometallates below 77 K. For the first tim e such an isotope effect was investigated in partially and completely deuterated (NH4)(2)MCl6 (M=Te, Se) using Raman studies, CI-NQR and die lectric measurements. The deuteration effect observed in the tellurium salt has been explained by the slowing down of deuteron motion in a t riangular shaped potential around the threefold axis and related suppl ementary movements of the octahedra.