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Giant room temperature compression and bending in ferroelectric oxide pillars

Author

Listed:
  • Ying Liu

    (The University of Sydney
    The University of Sydney)

  • Xiangyuan Cui

    (The University of Sydney
    The University of Sydney)

  • Ranming Niu

    (The University of Sydney)

  • Shujun Zhang

    (University of Wollongong)

  • Xiaozhou Liao

    (The University of Sydney)

  • Scott D. Moss

    (Aerospace Division, Defence Science and Technology Group)

  • Peter Finkel

    (US Naval Research Laboratory)

  • Magnus Garbrecht

    (The University of Sydney)

  • Simon P. Ringer

    (The University of Sydney)

  • Julie M. Cairney

    (The University of Sydney
    The University of Sydney)

Abstract

Plastic deformation in ceramic materials is normally only observed in nanometre-sized samples. However, we have observed high levels of plasticity (>50% plastic strain) and excellent elasticity (6% elastic strain) in perovskite oxide Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3, under compression along pc pillars up to 2.1 μm in diameter. The extent of this deformation is much higher than has previously been reported for ceramic materials, and the sample size at which plasticity is observed is almost an order of magnitude larger. Bending tests also revealed over 8% flexural strain. Plastic deformation occurred by slip along {110} . Calculations indicate that the resulting strain gradients will give rise to giant flexoelectric polarization. First principles models predict that a high concentration of oxygen vacancies weaken the covalent/ionic bonds, giving rise to the unexpected plasticity. Mechanical testing on oxygen vacancies-rich Mn-doped Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 confirmed this prediction. These findings will facilitate the design of plastic ceramic materials and the development of flexoelectric-based nano-electromechanical systems.

Suggested Citation

  • Ying Liu & Xiangyuan Cui & Ranming Niu & Shujun Zhang & Xiaozhou Liao & Scott D. Moss & Peter Finkel & Magnus Garbrecht & Simon P. Ringer & Julie M. Cairney, 2022. "Giant room temperature compression and bending in ferroelectric oxide pillars," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-27952-2
    DOI: 10.1038/s41467-022-27952-2
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    Cited by:

    1. Zhuo Chen & Yong Huang & Nikola Koutná & Zecui Gao & Davide G. Sangiovanni & Simon Fellner & Georg Haberfehlner & Shengli Jin & Paul H. Mayrhofer & Gerald Kothleitner & Zaoli Zhang, 2023. "Large mechanical properties enhancement in ceramics through vacancy-mediated unit cell disturbance," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Yunting Guo & Bin Peng & Guangming Lu & Guohua Dong & Guannan Yang & Bohan Chen & Ruibin Qiu & Haixia Liu & Butong Zhang & Yufei Yao & Yanan Zhao & Suzhi Li & Xiangdong Ding & Jun Sun & Ming Liu, 2024. "Remarkable flexibility in freestanding single-crystalline antiferroelectric PbZrO3 membranes," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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