Real-time direct observations of polarization reversal in a piezoelectric crystal: Pb(Mg1/3Nb2/3)O3-PbTiO3 studied via in situ electrical biasing transmission electron microscopy

Yukio Sato, Tsukasa Hirayama, Yuichi Ikuhara

研究成果: Contribution to journalArticle査読

64 被引用数 (Scopus)

抄録

The ultrahigh piezoelectricity of lead magnesium niobate-lead titanate (PMN-PT) single crystals is utilized for medical imaging and ultrasonic devices. It has been revealed that the domain structure is miniaturized down to the nanometer scale, indicating that the domain structure and its response to electric fields could play more roles. In this Letter, we report real-time direct observations of polarization reversals in PMN-PT with the use of in situ electrical biasing transmission electron microscopy. We find that a dominant behavior is a reversible response composed of the reorientation of nanoscale non-180° domain walls (DWs) and movement and/or elimination of microscale DWs. These results basically agree with some predictions made by adaptive phase theory (Jin et al.) which gives explanations of extrinsic contributions to the high piezoelectricity of this material.

本文言語英語
論文番号187601
ジャーナルPhysical review letters
107
18
DOI
出版ステータス出版済み - 10 25 2011
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

フィンガープリント

「Real-time direct observations of polarization reversal in a piezoelectric crystal: Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>-PbTiO<sub>3</sub> studied via in situ electrical biasing transmission electron microscopy」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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