NMR-STUDY OF PROTON SELF-DIFFUSION IN (NH4)(4)LIH3(SEO4)(4) AND (NH4)(4)LIH3(SO4)(4)

Authors
BLINC R LAHAJNAR G SELIGER J ZUPANCIC I ZIMMERMANN M FUITH A SCHRANZ W WARHANEK H
Citation
R. Blinc et al., NMR-STUDY OF PROTON SELF-DIFFUSION IN (NH4)(4)LIH3(SEO4)(4) AND (NH4)(4)LIH3(SO4)(4), Solid state communications, 92(9), 1994, pp. 765-767
Citations number
10
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
92
Issue
9
Year of publication
1994
Pages
765 - 767
Database
ISI
SICI code
0038-1098(1994)92:9<765:NOPSI(>2.0.ZU;2-Y
Abstract
The appearance of a ''liquid-like'' proton T-2 component and the I rel atively high value of the proton self-diffusion coefficient D = (2-6) x 10(-7) cm(2) s(-1) in the high temperature phase of (NH4)(4)LiH3(SeO 4)(4) and (NH4)(4)LiH3(SO4)(4) demonstrate the onset of super-ionic li ke fast protonic conduction in these crystals. The linear Larmor frequ ency dependence of the proton spin-lattice relaxation time at low fiel ds further demonstrates that we deal with low-dimensional acid proton translational diffusion already below room temperature.