直流和交流极化PMN-PT单晶的电场致去极化

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-02-26 DOI:10.1063/5.0250172

Jeong-Woo Sun, Zhengze Xu, Sang-Goo Lee, Wook Jo, Xiaoning Jiang, Jong Eun Ryu

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引用次数: 0

摘要

了解铁电材料在外界刺激下的退极化现象对于维持铁电材料的排列极化状态至关重要。虽然极化材料的热去极化已经很好地建立了，但电场诱导去极化的机制仍然很大程度上未被探索。在这项研究中，我们研究了[001]取向菱形体Pb(Mg1/3Nb2/3)O3-PbTiO3 （PMN-PT）单晶在直流极化（DCP）和交流极化（ACP）下的电脱极行为。我们发现ACP样品比DCP样品具有更低的反向矫顽力场。我们比较了在反向极化方向上施加双极和单极电场的影响，分析了介电常数和压电谐振的变化。采用压电响应力显微镜来表征极化和电去极化样品中的畴结构。我们的研究结果表明，性能退化可能是由于与初始排列相反的取向域的成核和生长引起的。

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Electric field-induced depolarization of direct current and alternating current poled PMN-PT single crystals

Understanding the depolarization of ferroelectric materials caused by external stimuli is critical for maintaining the aligned polarization states. Although thermal depolarization in poled materials is well established, the mechanisms of electric field-induced depolarization remain largely unexplored. In this study, we investigate the electrical depoling behavior of [001]-oriented rhombohedral Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) single crystals poled using direct current poling (DCP) and alternating current poling (ACP). We reveal that the ACP sample exhibits a lower reverse coercive field than the DCP specimen. We compare the effects of bipolar and unipolar electric fields applied in the reverse poling direction, analyzing the changes in permittivity and piezoelectric resonance. Piezoresponse force microscopy is employed to characterize domain configurations in poled and electrically depoled samples. Our findings suggest that property degradation may arise from the nucleation and growth of domains oriented opposite to the initial arrangement.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.