EFFECT OF THE GRAIN-SIZE ON THE TUNNEL DISTRIBUTION IN (NH4)2ZNCL4

Authors
LIU ZS PUNKKINEN M VUORIMAKI AH YLINEN EE
Citation
Zs. Liu et al., EFFECT OF THE GRAIN-SIZE ON THE TUNNEL DISTRIBUTION IN (NH4)2ZNCL4, Physica. B, Condensed matter, 202(3-4), 1994, pp. 343-345
Citations number
5
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
202
Issue
3-4
Year of publication
1994
Pages
343 - 345
Database
ISI
SICI code
0921-4526(1994)202:3-4<343:EOTGOT>2.0.ZU;2-2
Abstract
The effect of the grain size of a polycrystalline sample on the rotati onal tunnelling of ammonium ions is studied in (NH4)2ZnCl4 by NMR leve l crossing. When a single crystal is ground to a powder of 1-2 mum gra ins, the width of the distribution of the tunnel splitting is observed to increase tenfold and the peak position shifts somewhat.