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Type: Artigo de evento
Title: Esr Of Rare Earth Impurities (dy3+, Er3+, Yb3+) In The Narrow Gap Semiconductor Pbte
Author: Gennaro A.M.
Martins G.B.
Rettori C.
Barberis G.E.
An C.Y.
Abstract: Electron spin resonance experiments of several diluted rare-earth (Dy3+, Er3+, Yb3+) in the narrow gap semiconducting PbTe show ground states appropriated with a cubic crystal field splitting of the lowest multiplet. The data permits the determination of the sign and ratio of the cubic crystal field parameters. These results suggest that the rare-earth substitute the Pb2+ ions and that the crystal field is mainly associated to an octahedron of Te2- ions. The observed ESR spectra also show lower symmetry sites probably associated with nearest neighbor Pb2+ vacancies.
Editor: Publ by Materials Research Society, Pittsburgh, PA, United States
Rights: fechado
Identifier DOI: 
Date Issue: 1993
Appears in Collections:Unicamp - Artigos e Outros Documentos

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