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• 作者：Zhenyong Cen ; Changrong Zhou ; Xinglang Ye…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2014
• 出版时间：November 2014
• 年：2014
• 卷：25
• 期：11
• 页码：4983-4991
• 全文大小：1,054 KB
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• 作者单位：Zhenyong Cen (1)
  Changrong Zhou (1)
  Xinglang Ye (1)
  Yazhou Zhao (1)
  Fangyu Gan (1)
  Huanhua Zhang (1)
  
  1. School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, Guangxi, People’s Republic of China
  
• ISSN：1573-482X

文摘

Lead free 0.95(Bi0.5Na0.5)0.97(Li0.5Nd0.5)0.03TiO3-.05BaTiO3 (BNTLN0.03–BT5) ceramics were synthesized by conventional solid state reaction route. The effect of sintering temperature (T s) on structure and dielectric behaviors of BNTLN0.03–BT5 ceramics is investigated systematically. With increasing T s, the structure of BNTLN0.03–BT5 ceramics transforms from rhombohedral symmetry to pseudo-cubic symmetry. The grain size increases from ~4 to ~10?μm with increasing T s. The dielectric constants ε r, dielectric losses tanδ and dielectric frequency dispersion increase gradually at room temperature with increasing T s. The temperature stability coefficient f ε of dielectric constant ε r and the diffuseness coefficient γ increases with increasing T s. The sharp increase of dielectric constant ε r in the frequency of 1?kHz above T m is suppressed with increasing T s due to reducing Maxwell–Wagner polarization.