Low Frequency Dielectric Study of Barium and Strontium Substituted Pb(Zn1/3Nb2/3)O3 Ceramics

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Published 10 December 2003 • Copyright (c) 2003 The Japan Society of Applied Physics
, , Citation R. R. Vedantam et al 2003 Jpn. J. Appl. Phys. 42 7392 DOI 10.1143/JJAP.42.7392

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1 Microwave laboratory, Department of Physics, Indian Institute of Technology, Chennai 600 036, India.

2 Materials Science Division, Indira Gandhi Centre for Atomic research, Kalpakkam 603 102, India.

Dates

  1. Received 16 June 2003
  2. Accepted 17 July 2003
  3. Published

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Abstract

The dielectric dispersion of the solid solutions (Pb1-xBax)(Zn1/3Nb2/3)O3 and (Pb1-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(Zn1/3Nb2/3)O3 exhibits stronger dielectric relaxation than Strontium substituted Pb(Zn1/3Nb2/3)O3.

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10.1143/JJAP.42.7392