Microemulsion synthesis, structural characterization and dielectric properties of Ba1-xPbxZrO3 (0.05 ≤ x ≤ 0.20) nanoparticles

Tokeer Ahmad, Mohd Ubaidullah, Irfan H. Lone, Dinesh Kumar, Omar Alhartomy

Research output: Contribution to journalJournal articlepeer-review

6 Scopus citations

Abstract

Monophasic nanoparticles of Ba1-xPbxZrO3 (x = 0.05, 0.10, 0.15 and 0.20) have been successfully prepared by inverse microemulsion method. The X-ray diffraction studies confirm the contraction of lattice in the monophasic solid solutions of (Ba,Pb)ZrO3. TEM studies showed the formation of polydispersed particles (spherical, cubic and hexagonal) with grain size in the range of 42–70 nm. The surface area of as-prepared nanoparticles was found to be in the range of 64–157 m2g−1. The dielectric constant was found to increase (27.2–89.5) whereas the dielectric loss was found to decrease (0.07–0.002) on increasing the Pb2+ ion concentration (0.05–0.20), suggesting effective dielectric characteristics of synthesized nanoparticles. Suitable pore morphology and high temperature stability makes this material a prominent media to develop capacitive sensor. It is observed that the capacitance of the sensor increases with increase in humidity for that the nanoparticles may be suitable for vapor sensing application.

Original languageEnglish
Pages (from-to)185-192
Number of pages8
JournalMaterials Research Bulletin
Volume89
DOIs
StatePublished - 1 May 2017

Keywords

  • Chemical synthesis
  • Dielectric properties
  • Nanostructures
  • Transmission electron microscopy
  • X-ray diffraction

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