Lattice distortion-induced ferroelectricity in nonstoichiometric Ba0.9(Fe0.5Nb0.5)O3−δ thin films
Source abstract
Abstract
实现材料的顺电-铁电相变可以丰富铁电材料的多样性. 本文通 过设计和引入A位非化学计量缺陷, 在Ba0.9(Fe0.5Nb0.5)O3−δ薄膜中实现 了晶格畸变, 诱导出室温铁电. 薄膜中引入的四方畸变和局部位错促进 了结构的对称性破缺以及自发极化的出现. 在这里我们成功实现了室 温下剩余极化Pr约为8 µC cm−2的铁电性和高达450°C的相稳定性温度. 我们的研究工作为通过缺陷工程发现和调节新型铁电材料提供了一种 实用的方法.
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Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Multiferroics and related materials · Ferroelectric and Negative Capacitance Devices
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References (32)
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