Effects of strontium on the dielectric and piezoelectric properties of Sm-modified PbTiO3 ceramics

Te Yi Chen, Sheng-Yuan Chu, Shih Jeh Wu, Yung Der Juang

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)

摘要

The Sm-modified lead titanate ceramics with a composition of (Pb 0.88 - x Sr x Sm 0.08 ) (Ti 0.98 Mn 0.02 )O 3 ; x = 0.05~0.25 were prepared by conventional mixed-oxide method. The dielectric and piezoelectric properties of these doped ceramics were measured at room temperature. Microstructural and compositional analyses have been carried out using SEM and XRD. The experiments successfully showed that Sr additive is helpful to obtain much higher thickness electromechanical coupling coefficient, k t (>0.55), than that of conventional PbTiO 3 based ceramics and still keep small planar electromechanical coupling coefficient, k p . On the other hand, the Sr additives help to reduce the lattice anisotropy efficiently. The temperature coefficient of frequency and the Curie point versus the amount of Sr composition were also investigated.

原文English
頁(從 - 到)37-47
頁數11
期刊Ferroelectrics
282
DOIs
出版狀態Published - 2003 六月 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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