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The EPR spectra of Gd3+and Eu2+in lead chalcogenides

Authors
Journal
Journal of Physics and Chemistry of Solids
0022-3697
Publisher
Elsevier
Publication Date
Volume
30
Issue
3
Identifiers
DOI: 10.1016/0022-3697(69)90025-0

Abstract

Abstract The EPR spectra of Gd 3+ and Eu 2+ in the lead chalcogenides PbS, PbSe and PbTe have been studied at room temperature. In each case the fine structure is characteristic of cubic field splitting. The b 4 values for the europium doped samples show a steady decrease in going from PbS to PbTe, but the b 4 values for the gadolinium doped materials are approximately constant. These results are interpreted in terms of a simple electrostatic model. The Eu 2+ ions are assumed to occupy a lattice site, and the Gd 3+ ions an interstitial site around which distortion of the lattice has taken place.

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