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《科学》 第393卷 第6812期 · 2026年8月13日 · 中文解读

突破织构压电陶瓷的性能上限

Overcoming the performance ceiling of textured piezoelectric ceramics · Unknown
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本文报道了利用机器学习优化成分和掺杂,制备出压电系数高达1720 pC/N且居里温度为250°C的钐掺杂PIN-PSN-PT织构陶瓷,其性能可与甚至超越单晶。
原文开头
After more than two decades of effort, however, the piezoelectric properties of PT- based textured ceramics remain substantially be- low their theoretical potential (9, 21). For example, in the classical Pb(Mg1/3Nb2/3)O3- 0.30PbTiO3 (PMN- PT) system, the highest reported d33 for textured ceramics is ∼1300 pC N−1, which is only 50 to 60% of the single- crystal value for the same composition (2000 to 2500 pC N−1). This persistent gap stems from the intrinsic microstructural charac- teristics of textured ceramics, including grain boundaries with low piezoelectric properties, incomplete grain alignment, and domain size confinement by grain boundaries (21–23). …
摘自《科学》(Science)第393卷 第6812期 · 2026年8月13日,Unknown。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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