Abstract Controlling the thermal expansion coefficient can effectively reduce the thermal stress and enhance the reliability of materials or structures. In this work, based on the fact that the thermal expansion coefficient of ferroelectric ceramics is negative along the poling direction and positive along the transversal direction, we tailored the domain structure of Lead Zirconate Titanate (PZT) ceramics by two-dimensional periodically orthogonal poling. The in-plane thermal expansion coefficient can be controlled in a wide range ( α = − 8.2 × 10 − 6 ∘ C − 1 ∼ 2.5 × 10 − 6 ∘ C − 1 ) which may find wide applications in the fields of thin film fabrication, electronic packaging, etc.

中文翻译：

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通过二维周期性正交极化在铁电陶瓷中可控热膨胀

摘要 控制热膨胀系数可以有效降低热应力，提高材料或结构的可靠性。在这项工作中，基于铁电陶瓷的热膨胀系数沿极化方向为负而沿横向为正的事实，我们通过二维周期性正交极化来定制锆钛酸铅（PZT）陶瓷的畴结构。面内热膨胀系数可以控制在很宽的范围内（ α = − 8.2 × 10 − 6 ∘ C − 1 ∼ 2.5 × 10 − 6 ∘ C − 1 ），在薄膜制造领域有广泛的应用、电子封装等。