Structural and Dielectric Properties of Sn Doped Barium Magnesuim Zirconium Titanate Perovskite Ceramics

• 作者: Kamala Sujani Dasari Sankararao Gattu Venkata Ramesh Kocharlakota
• 来源期刊: 凝固态物理国际期刊(英文)
• 学科: 化学
• 关键词: SN DOPED BARIUM TITANATE DIELECTRIC Properties PEROVSKITE Lead Free Ceramics
• 年，卷（期）: ngtwlgjqkyw_2015,（4）
• 页码范围: 346-352
• 页数: 7页
• 分类号: O6

摘要

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.