高熵氧化物(HEOs)因為眾多的應用潛力吸引了廣泛的研究關注，然而高熵氧化粉末大多是通過固態反應法製備，而且很少有關於高熵氧化膜的研究報導。除此之外，仍然缺乏形貌調整和壓電相關的應用。
在這項研究中，開發了一種簡便的水熱合成方法，製備 Ba(Ti,Hf,Zr,Fe,Sn)O3粉末以及在FTO基板上製備其奈米柱和奈米顆粒膜，並研究它們的壓電相關應用。樣品(F52)表現出優異的d33(約126.7 pm / V），優於單晶ZnO和其他樣品(F59a、MEO1、MEO2)。這表示Ba(Ti,Hf,Zr,Fe,Sn)O3薄膜在壓電相關應用中的巨大前景。

HEOs have attracted extensive research attention for various applications; however, HEO powders were fabricated through solid-state reactions and few studies on HEO films were reported. Furthermore, morphology tuning and piezoelectric-related applications are still lacking.
In this study, a facile hydrothermal synthesis was developed to fabricate Ba(Zr,Hf,Sn,Fe,Ti)O3 powders, and nanorod and nanoparticle films on FTO substrates. Their piezo-related applications were also studied. The sample (F52) exhibited superior d33 (approximately 126.7 pm/V), outperforming single-crystal ZnO and other samples (F59a, MEO1,MEO2). This implied great promise of Ba(Zr,Hf,Sn,Fe,Ti)O3 films in piezoelectric-related applications.

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