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Title: Order parameter and scaling behavior in BaZr{sub x}Ti{sub 1−x}O{sub 3} (0.3 < x < 0.6) relaxor ferroelectrics

We report the relaxor behavior of the zirconium doped barium titanate BaZr{sub x}Ti{sub 1−x}O{sub 3} solid solutions and discuss the temperature, frequency, and concentration dependence in terms of correlations among the polar nanoregions. The relaxor behavior is analyzed within the mean field theory by estimating the Edward-Anderson order parameter q{sub EA}. Additionally, we find that q{sub EA} calculated for the different concentrations obeys a scaling behavior q{sub EA}=1−(T/T{sub m}){sup n}, where T{sub m} are the respective dielectric maxima temperatures and n = 2.0 ± 0.1. The frequency dependence of the q{sub EA} also shows results consistent with the above mentioned picture.
Authors:
; ; ;  [1]
  1. Department of Physics, Quaid-i-Azam University, Islamabad 45320 (Pakistan)
Publication Date:
OSTI Identifier:
22253150
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 26; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BARIUM; CORRELATIONS; DOPED MATERIALS; FERROELECTRIC MATERIALS; FREQUENCY DEPENDENCE; MEAN-FIELD THEORY; ORDER PARAMETERS; SCALING; SOLID SOLUTIONS; TITANATES; ZIRCONIUM