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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Effects of Bi(ZnNb)O Modification on the Relaxor Behavior and Piezoelectricity of Pb(MgNb)O–PbTiO Ceramics
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Effects of Bi(ZnNb)O Modification on the Relaxor Behavior and Piezoelectricity of Pb(MgNb)O–PbTiO Ceramics

机译：Bi（ZnNb）O改性对Pb（MgNb）O–PbTiO陶瓷的弛豫行为和压电性的影响

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摘要

Relaxor lead magnesium niobate (PMN)-based materials exhibit complex structures and unusual properties that have been puzzling researchers for decades. In this paper, a new ternary solid solution of Pb(MgNb)O–PbTiO–Bi(ZnNb)O (PMN–PT–BZN) is prepared in the form of ceramics, and the effects of the incorporation of BZN into the PMN-PT binary system are investigated. The crystal structure favors a pseudocubic symmetry and the relaxor properties are enhanced as the concentration of BZN increases. The relaxor behavior and the related phase transformations are studied by dielectric spectroscopy. A phase diagram mapping out the characteristic temperatures and various states is established. Interestingly, the piezoelectricity of the PMN-PT ceramics is significantly enhanced by the BZN substitution, with an optimal value of reaching 826 pC/N for 0.96[0.7Pb(MgNb)O-0.3PbTiO]-0.04Bi(ZnNb)O. This paper provides a better understanding of the relaxor ferroelectric behavior, and unveils a new relaxor-based ternary system as piezoelectric materials potentially useful for electromechanical transducer applications.
机译：弛豫性铌酸镁镁（PMN）基材料具有复杂的结构和不寻常的性能，数十年来一直困扰着研究人员。本文以陶瓷形式制备了一种新的Pb（MgNb）O–PbTiO–Bi（ZnNb）O（PMN–PT–BZN）三元固溶体，以及将BZN掺入PMN中的影响。对PT二进制系统进行了研究。晶体结构有利于伪立方对称，并且随着BZN浓度的增加，弛豫性能增强。通过介电谱研究弛豫器行为和相关的相变。建立映射出特征温度和各种状态的相图。有趣的是，通过BZN替代，PMN-PT陶瓷的压电性得到了显着增强，对于0.96 [0.7Pb（MgNb）O-0.3PbTiO] -0.04Bi（ZnNb）O，最佳值达到826 pC / N。本文提供了对弛豫铁电行为的更好理解，并揭示了一种新的基于弛豫的三元系统，作为压电材料，可潜在用于机电换能器应用。

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    Zenghui Liu; Hua Wu; Alisa Paterson; Wei Ren; Zuo-Guang Ye;

  • 作者单位

    Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an, China;

    Department of Chemistry and 4D LABS, Simon Fraser University, Burnaby, Canada;

    Department of Chemistry and 4D LABS, Simon Fraser University, Burnaby, Canada;

    Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an, China;

    Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an, China;

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  • 正文语种 eng
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  • 关键词

    Ceramics; Solids; Dielectrics; Temperature measurement; Crystals; Powders; Dielectric measurement;

    机译：陶瓷;固体;电介质;温度测量;晶体;粉末;电介质测量;

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