ROTATIONAL EXCITATIONS OF NH4-HALIDE LATTICES - ARE THEY STRAIN FIELDMEDIATED( IONS IN METAL ALKALI)

Authors
MUKHOPADHYAY R NARASIMHAN SL
Citation
R. Mukhopadhyay et Sl. Narasimhan, ROTATIONAL EXCITATIONS OF NH4-HALIDE LATTICES - ARE THEY STRAIN FIELDMEDIATED( IONS IN METAL ALKALI), Solid state communications, 94(6), 1995, pp. 461-464
Citations number
12
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
94
Issue
6
Year of publication
1995
Pages
461 - 464
Database
ISI
SICI code
0038-1098(1995)94:6<461:REONL->2.0.ZU;2-4
Abstract
We show that the rotational excitations of NH4+ ions in mixed ammonium metal alkali halides at low temperatures-observed in inelastic neutro n scattering experiments-can be satisfactorily explained if the random strain fields in the system can be modeled in terms of Gaussian distr ibuted barrier heights to their rotations.