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首页> 外文期刊>Materials Research Innovations >Microstructure and electrical properties of ultra high temperature (1-x)CaBi2Nb2O9-xNa(0.5)Bi(2.5)Nb(2)O(9) ceramics
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Microstructure and electrical properties of ultra high temperature (1-x)CaBi2Nb2O9-xNa(0.5)Bi(2.5)Nb(2)O(9) ceramics

机译：超高温（1-x）CaBi2Nb2O9-xNa（0.5）Bi（2.5）Nb（2）O（9）陶瓷的微观结构和电性能

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摘要

Bismuth layer structured ferroelectric ceramics of (1-x)CaBi2Nb2O9-xNa(0.5)Bi(2.5)Nb(2)O(9) [(1-x) CBNO-xNBNO, 0 <= x <= 1.0] ceramics were obtained by conventional solid state reaction method. The effects of Na0.5Bi2.5Nb2O9 (NBNO) addition on the microstructure and electrical properties of ceramics have been studied. X-ray diffraction studies reveal that NBNO diffuses into the CBNO lattices to form a solid solution with an Aurivillius structure a pure orthorhombic space group A2(1)am. The room temperature record Raman spectra of CBNO-NBNO ceramics with x50.0-0.8, the well defined phonon modes around 190, 587 and 820 cm(-1) are observed. They were all single phase ferroelectrics with high Curie points (similar to 900 degrees C). Compared with CBNO, all the solid solution ceramics have a higher piezoelectric constant d(33), and a larger remnant polarisation (P-r). The 0.6CBNO-0.4NBNO ceramics possess the optimal piezoelectric properties, and the piezoelectric coefficient (d(33)), Curie temperature (T-c), and remanent polarisation 2P(r) were found to be 10.3 pC N-1, 903 degrees C and 5.0 mu C cm(-2) respectively. These properties suggest that CBNO-NBNO system ceramics might be good candidates for high temperature piezoelectric applications.
机译：获得（1-x）CaBi2Nb2O9-xNa（0.5）Bi（2.5）Nb（2）O（9）[（1-x）CBNO-xNBNO，0 <= x <= 1.0]的铋层结构铁电陶瓷通过常规的固态反应方法。研究了Na0.5Bi2.5Nb2O9（NBNO）对陶瓷的微观结构和电性能的影响。 X射线衍射研究表明，NBNO扩散到CBNO晶格中，形成具有纯正正交空间群A2（1）am的Aurivillius结构的固溶体。室温记录的CBNO-NBNO陶瓷具有x50.0-0.8的拉曼光谱，观察到大约190、587和820 cm（-1）的清晰声子模。它们都是具有高居里点（类似于900摄氏度）的单相铁电体。与CBNO相比，所有固溶陶瓷均具有较高的压电常数d（33）和较大的剩余极化率（P-r）。 0.6CBNO-0.4NBNO陶瓷具有最佳的压电性能，并且发现压电系数（d（33）），居里温度（Tc）和剩余极化2P（r）为10.3 pC N-1、903摄氏度和5.0μC cm（-2）。这些性质表明，CBNO-NBNO体系陶瓷可能是高温压电应用的良好候选材料。

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  • 来源
    《Materials Research Innovations》 |2015年第3期|171-175|共5页
  • 作者

    Tian X.; Qu Shaobo; Wang B.; Xu Z.;

  • 作者单位

    Air Force Engn Univ, Coll Sci, Xian, Shaanxi, Peoples R China;

    Air Force Engn Univ, Coll Sci, Xian, Shaanxi, Peoples R China|Xi An Jiao Tong Univ, Key Lab Minist Educ, Elect Mat Res Lab, Xian 710049, Shaanxi, Peoples R China;

    Air Force Engn Univ, Coll Sci, Xian, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Key Lab Minist Educ, Elect Mat Res Lab, Xian 710049, Shaanxi, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ultra high temperature; Bismuth layer structured; Ceramics; Properties; CaBi2Nb2O9; Na0.5Bi2.5Nb2O9;

    机译：超高温;铋层结构;陶瓷;性能;CaBi2Nb2O9;Na0.5Bi2.5Nb2O9;

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