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Photoluminescence investigations on the nanoscale phase transition in Pb(Mg1/3Nb2/3)O3
Published in
2007
Volume: 142
   
Issue: 11
Pages: 651 - 654
Abstract
The temperature dependence of the photoluminescence spectra of the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 has been reported. The temperature behaviours of the 1.57, 1.67 and 1.73 eV bands indicate a phase transition at 110 K. This is attributed to a structural phase transition in the charged nanoshell. Analysis of the temperature dependence of 1.67 eV band intensity with a thermal quenching model indicated the existence of a phonon mode at 1153 cm-1. This mode is identified in the Raman spectra measurement. The intensity of the 1.73 eV band showing an anomalous behaviour at 210 K is attributed to a transition from a crystalline phase to an amorphous phase in the charged nanoshell. © 2007 Elsevier Ltd. All rights reserved.
About the journal
JournalSolid State Communications
ISSN00381098
Open AccessNo
Concepts (12)
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    Ferroelectric materials
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    Nanostructures
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    Phase transitions
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    Photoluminescence
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    Quenching
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    Raman scattering
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    Amorphous phase
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    CHARGED NANOSHELL
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    Crystalline phase
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    Temperature dependence
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    THERMAL QUENCHING
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    Lead compounds