Abstract [BaTiO3]Λ/2/[BaZrO3]Λ/2 superlattices (SLs) were grown by pulsed laser deposition (PLD) technique and their dielectric tunability, ferroelectric, and energy storage properties were investigated by varying the modulation periodicity (Λ). The maximum dielectric tunability was obtained for the weakest periods accompanied by an energy storage density around 5 J/cm3 and an efficiency of η = 80% at room temperature. For the intermediate periods, the SLs present normal ferroelectric behavior with high Pr and Ec leading to lower energy storage properties. High and stable energy storage density and efficiency can be reached by applying high electric field for the SLs with weak periods which makes these systems very promising for energy storage capacitors applications.

中文翻译：

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调整 BaTiO3/BaZrO3 超晶格的介电和储能特性

摘要 [BaTiO3]Λ/2/[BaZrO3]Λ/2 超晶格（SLs）是通过脉冲激光沉积（PLD）技术生长的，并通过改变调制周期（Λ）研究了它们的介电可调谐性、铁电性和能量存储特性。在最弱的时期获得了最大的介电可调性，伴随着大约 5 J/cm3 的能量存储密度和室温下 η = 80% 的效率。在中间阶段，SL 呈现出正常的铁电行为，具有高 Pr 和 Ec，导致较低的能量存储性能。通过对具有弱周期的 SL 施加高电场，可以达到高且稳定的储能密度和效率，这使得这些系统非常有希望用于储能电容器应用。