声发射法比较(1-x)SrTiO3-xBiFeO3和(1-x)SrTiO3-xBaTiO3弛豫铁电体随机场强

IF 0.9 4区物理与天体物理 Q4 PHYSICS, APPLIED

European Physical Journal-applied Physics Pub Date : 2020-11-01 DOI:10.1051/epjap/2020200075

E. Dul’kin, M. Roth

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引用次数: 1

摘要

在弛豫(1-x)SrTiO3 -x BiFeO3铁电陶瓷(x = 0.2, 0.3和0.4)中，成功地检测了中间温度和Burns温度，并利用声发射研究了它们依赖于外部偏置场的行为。所有这些温度都表现出非平凡的行为，即随着偏置场的增强，在某些阈值场达到最小值。在(1-x)SrTiO3 -x BiFeO3中，阈值场随着x的增加而减小，正如之前在(1-x)SrTiO3 -x BaTiO3中观察到的那样(E. Dul'kin, J. Zhai, M. Roth, Phys。固体状态B 252, 2079(2015))。根据阈值场的数据，讨论了随机电场的产生机理，并比较了两种弛豫铁电体中随机电场的强度。

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Comparison of random field strengths in (1-x)SrTiO3-xBiFeO3 and (1-x)SrTiO3-xBaTiO3 relaxor ferroelectrics by means of acoustic emission

In relaxor (1-x )SrTiO3 -x BiFeO3 ferroelectrics ceramics (x = 0.2, 0.3 and 0.4) both intermediate temperatures and Burns temperatures were successfully detected and their behavior were investigated in dependence on an external bias field using an acoustic emission. All these temperatures exhibit a non-trivial behavior, i.e. attain the minima at some threshold fields as a bias field enhances. It is established that the threshold fields decrease as x increases in (1-x )SrTiO3 -x BiFeO3 , as it previously observed in (1-x )SrTiO3 -x BaTiO3 (E. Dul'kin, J. Zhai, M. Roth, Phys. Status Solidi B 252 , 2079 (2015)). Based on the data of the threshold fields the mechanisms of arising of random electric fields are discussed and their strengths are compared in both these relaxor ferroelectrics.

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来源期刊

European Physical Journal-applied Physics 物理-物理：应用

CiteScore

1.90

自引率

10.00%

发文量

审稿时长

1.9 months

期刊介绍： EPJ AP an international journal devoted to the promotion of the recent progresses in all fields of applied physics. The articles published in EPJ AP span the whole spectrum of applied physics research.