|
Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2006, Volume 83, Issue 3, Pages 133–137
(Mi jetpl1238)
|
|
|
|
This article is cited in 7 scientific papers (total in 7 papers)
CONDENSED MATTER
Orientationally degenerate (OH)$^-$ centers in perovskite-type proton-conducting oxides: Low-temperature thermodynamics and H/D isotope effects
A. Ya. Fishmana, V. Ya. Mitrofanova, V. I. Tsidilkovskib a Institute of Metallurgy RAS
b Institute of High-Temperature Electrochemistry, RAS
Abstract:
It is shown that proton-associated dipole centers $\mathrm{(OH)^-}$ can provide significant, glass-like, contributions to the low temperature properties of perovskite-type proton conducting oxides, such as $\mathrm{ABO_{3-y}}$ doped with cations of lower valence. These contributions result from the splitting of the orientationally degenerated states of dipole centers by random crystal fields and protons tunneling. It is demonstrated that H/D (or H/T) substitution leads to large and abnormal isotope effects for the properties caused by $\mathrm{(OH)^-}$ degenerated states.
Received: 17.10.2005
Citation:
A. Ya. Fishman, V. Ya. Mitrofanov, V. I. Tsidilkovski, “Orientationally degenerate (OH)$^-$ centers in perovskite-type proton-conducting oxides: Low-temperature thermodynamics and H/D isotope effects”, Pis'ma v Zh. Èksper. Teoret. Fiz., 83:3 (2006), 133–137; JETP Letters, 83:3 (2006), 103–108
Linking options:
https://www.mathnet.ru/eng/jetpl1238 https://www.mathnet.ru/eng/jetpl/v83/i3/p133
|
Statistics & downloads: |
Abstract page: | 165 | Full-text PDF : | 42 | References: | 35 |
|