摘要
采用固相反应法制备了(Ba_(1-x)Pr)x)Ti_(1-x/4)O_3(x=0.10~0.20)(BPT)的陶瓷.由X射线衍射(XRD)和电子顺磁共振(EPR)技术研究了BPT陶瓷的固溶度及Pr离子的位占据情况.结果表明:BPT陶瓷的固溶度为x=0.17,且在固溶限制范围内BPT具有单相立方钙钛矿结构; Pr离子支配性地占据Ba位.
The solid-state reaction method was used to prepare(Ba_(1-x)Pr_x) Ti_(1-x/4)O_3( x = 0.10~0.20)( BPT) ceramics.The solid solubility and site occupations of Pr ions in BPT were investigated using X-ray diffraction( XRD) and electron paramagnetic resonance( EPR) techniques.The results indicate that the solubility limit is x = 0.17,within which BPT ceramics exhibit a single-phase cubic perovskite structure. Pr ions are substituted predominantly for Ba-sites.
引文
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