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Largely enhanced piezoelectric and luminescent properties of Er doped BST ceramics

机译：大量增强了ER掺杂BST陶瓷的压电和发光性能

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摘要

Multifunctional Ba_(1-x)Ti_(0.96)Sn_(0.04)O3 + x mol% Er (BST-Er) ceramics were prepared using a solid state reaction method. The large piezoelectric coefficient (d_(33) =400 pC N~(-1) ) and field induced strain (S =0.175%) were obtained for the BST-Er ceramics at x =0.5. The polymorphic phase transitions (PPT) from the orthorhombic phase to the tetragonal phase, which contributes to the high piezoelectricities, was identified at room temperature (RT). There are bright green emission bands centered at 520 and 550 nm in up-conversion (UC) luminescence spectra measured under 980 nm laser excitation, which correspond to the radiative transitions from ~2 H_(11/2) and ~4 S_(3/2) to ~4 I_(15/2), respectively. The fluorescence intensity ratio of green UC emissions at 520 and 550 nm was investigated in the temperature range of 233-413 K. The maximum sensing sensitivity was found to be 0.0033 K~(-1) . The results reveal that the BST-Er ceramics with simple composition are promising multifunctional sensing materials.
机译：使用固态反应方法制备多官能Ba_（1-x）Ti_（0.04）Sn_（0.04）O 3 +×Mol％ER（BST-ER）陶瓷。在X = 0.5的BST-ER陶瓷获得大的压电系数（D_（33）= 400pc n〜（-1））和现场诱导的菌株（S = 0.175％）。在室温（RT）中鉴定了从正晶相到四字体相的正式相的多态性相转变（PPT），从而有助于高压电电。在980nm激光激发下测量的亮度为520和550nm的亮绿色发射带，在980nm激光激发下测量，与〜2 h_（11/2）和〜4 s_（3 /）相对应的辐射转变。（3 / 2）分别为〜4 I_（15/2）。在233-413K的温度范围内研究了520和550nm处的绿色UC排放的荧光强度比。发现最大感测灵敏度为0.0033k〜（-1）。结果表明，具有简单组合物的BST-ER陶瓷是有前途的多功能传感材料。

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  • 来源
    《RSC Advances》 |2015年第111期|共5页
  • 作者

    Wei Li; Zhijun Xu; Ruiqing Chu;

  • 作者单位

    College of Materials Science and Engineering Liaocheng University Liaocheng 252059 China.;

    College of Materials Science and Engineering Liaocheng University Liaocheng 252059 China.;

    College of Materials Science and Engineering Liaocheng University Liaocheng 252059 China.;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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