EPR IDENTIFICATION OF A MONOCLINIC FE-RELATED COMPLEX IN ZNS

Citation
J. Kreissl et al., EPR IDENTIFICATION OF A MONOCLINIC FE-RELATED COMPLEX IN ZNS, Solid state communications, 94(8), 1995, pp. 667-672
Citations number
21
Categorie Soggetti
Physics, Condensed Matter
Journal title
ISSN journal
00381098
Volume
94
Issue
8
Year of publication
1995
Pages
667 - 672
Database
ISI
SICI code
0038-1098(1995)94:8<667:EIOAMF>2.0.ZU;2-M
Abstract
On cubic ZnS crystals doped with Fe the paramagnetic resonance spectru m of a monoclinic Fe-Zn(+)(A(-))-X complex with a (4)A(2)(F) ground st ate has been studied under band to band illumination. The monoclinic d istortion of the cubic crystal held is due to one or more associated d efects ''X'' whose origin remains unknown. The largest component of th e distortion is oriented along a [100] axis. All transitions arise fro m a spin ground doublet \ +/- 1/2] which can be described by an effect ive spin Hamiltonian with S' = 1/2. The g'-values are g'(z') = 2.223, g'(x') = 4.426, and g'(y') = 4.608 with x' being [110] and y', z' incl ined about 8.5 degrees against [($) over bar 110] and [001], respectiv ely, in the plane perpendicular to x'. The corresponding parameters of a spin Hamiltonian describing the full S = 3/2 (d(7)) ground state ma nifold are g(x') = g(y') = 2.259, g(z') = 2.224 and E/D = 0.0134 with D > 1 cm(-1).