Structural Evolution and Dielectric Properties of Ba(Ti1-x Zrx)O3Perovskite Ceramics


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Öksüz K. E. , Şen Ş., Şen U.

ICSTR Athens – International Conference on Science TechnologyResearch, 19-20 July, 2018, Athens, Yunanistan, 19 - 20 Temmuz 2018, cilt.1, ss.9

  • Cilt numarası: 1
  • Basıldığı Şehir: Athens
  • Basıldığı Ülke: Yunanistan
  • Sayfa Sayıları: ss.9

Özet

Zirconium doped barium titanate Ba(Ti1-xZrx)O3, lead-free ceramics were

synthesized using the solid-state reaction method by adopting the ball milling

technique. The influence of the substitution content on crystallographic

structure, phase transition, microstructure, electrical properties and sintering

behavior of BT and BZT ceramics were investigated. Raman spectroscopy and

X-ray diffraction studies at room temperature revealed a structural

transformation with enhancement of ZrO2 content in the BaTiO3 matrix. The

scanning electron microscope and energy-dispersive X-ray spectroscopy were

used to investigate the microstructures and surface morphologies of the

sintered samples. Scanning electron microscope observations revealed that

enhanced microstructural uniformity and retarded grain growth with

increasing ZrO2 content. All synthesized ceramic samples exhibited dielectric

dispersion at low frequencies and significant differences in dielectric

properties and sintering behavior were observed due to extreme ZrO2

addition in Ba(Ti1-xZrx)O3 ceramics.

Keywords: Ferroelectrics, BaTiO3 solid solutions, Zr-doped barium titanates, dielectric.