A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
EFFECT OF THE GRAIN-SIZE ON THE TUNNEL DISTRIBUTION IN (NH4)2ZNCL4
Tekijät: LIU ZS, PUNKKINEN M, VUORIMAKI AH, YLINEN EE
Kustantaja: ELSEVIER SCIENCE BV
Julkaisuvuosi: 1994
Lehti:: Physica B: Condensed Matter
Tietokannassa oleva lehden nimi: PHYSICA B
Lehden akronyymi: PHYSICA B
Vuosikerta: 202
Numero: 3-4
Aloitussivu: 343
Lopetussivu: 345
Sivujen määrä: 3
ISSN: 0921-4526
DOI: https://doi.org/10.1016/0921-4526(94)90316-6
Tiivistelmä
The effect of the grain size of a polycrystalline sample on the rotational tunnelling of ammonium ions is studied in (NH4)2ZnCl4 by NMR level crossing. When a single crystal is ground to a powder of 1-2 mum grains, the width of the distribution of the tunnel splitting is observed to increase tenfold and the peak position shifts somewhat.
The effect of the grain size of a polycrystalline sample on the rotational tunnelling of ammonium ions is studied in (NH4)2ZnCl4 by NMR level crossing. When a single crystal is ground to a powder of 1-2 mum grains, the width of the distribution of the tunnel splitting is observed to increase tenfold and the peak position shifts somewhat.