TITLE:
Structural and Dielectric Properties of Sn Doped Barium Magnesuim Zirconium Titanate Perovskite Ceramics
AUTHORS:
Sankararao Gattu, Kamala Sujani Dasari, Venkata Ramesh Kocharlakota
KEYWORDS:
Sn Doped, Barium Titanate, Dielectric Properties, Perovskite, Lead Free Ceramics
JOURNAL NAME:
World Journal of Condensed Matter Physics,
Vol.5 No.4,
November
30,
2015
ABSTRACT: Perovskite type ceramics (Ba0.9Mg0.1)(SnxZr0.4-xTi0.6)O3 (with x = 0.01, 0.02, 0.03 and 0.04) relaxor composition prepared through solid state reaction route and calcinated at temperature is 1150°C for 5 hrs with intermediate mixing. The room temperature XRD study suggests that all the samples have the single phase cubic symmetry with space group pm 3 m. The pellets were sintered at 1500°C for 4 hrs. Scanning Electron Microscope (SEM) observations revealed enhanced micro structural uniformity and retarded grain growth with decreasing Sn content. The dielectric measurements at constant frequency show that dielectric constant increases with Sn content. Loss factor and dielectric constant decreased with increasing frequency but at very high frequencies it was independent.