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Low Frequency Dielectric Study of Barium and Strontium Substituted Pb(Zn1/3Nb2/3)O3 Ceramics
R. R. Vedantam, , Vemuri Rama Krishna Murthy
Published in Japan Society of Applied Physics
2003
Volume: 42
   
Issue: 12
Pages: 7392 - 7396
Abstract
The dielectric dispersion of the solid solutions (Pb1-xBa x)(Zn1/3Nb2/3)O3 and (Pb 1-xSrx)(Zn1/3Nb2/3)O3 with x = 0.2 and 0.3 has been studied as a function of temperature for the frequency range 0.1 to 200 kHz. The variation in the relaxor nature between the studied compounds is discussed using the generalized Curie-Weiss law. The paper also discusses the variation in the relaxation mechanism in these compounds with Barium and Strontium substitution using Vogel-Fulcher relation and power law. Detailed analysis of power law shows that Barium substituted Pb(Zn 1/3Nb2/3)O3 exhibits stronger dielectric relaxation than Strontium substituted Pb(Zn1/3Nb2/3)O 3.
About the journal
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
PublisherJapan Society of Applied Physics
ISSN00214922
Open AccessNo
Concepts (16)
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    Activation energy
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    Crystal growth
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    Crystal symmetry
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    Dispersions
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    Ferroelectric ceramics
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    Lead alloys
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    Mathematical models
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    Polycrystalline materials
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    Solid solutions
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    Thermal effects
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    LAED ZINC NIOBATE
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    POLAR CLUSTERS
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    Power law
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    Relaxor ferroelectrics
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    VOGEL-FULCHER RELATION
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    Dielectric relaxation