Electrical Field Driven Structural Evolutions of Polymorphic Nanodomains in Ferroelectric Ba(Zr,Ti)O3 Films

Yuhang Ren*, Onur Kurt, Hongbo Cheng, Tong Le, Steve Greenbaum, Jun Ouyang*

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Özet

Film ferroelectrics possessing large breakdown strength and high energy density hold great promise for compact and efficient power systems. However, it is still unclear how the evolution of their underlying structure engenders their defining energy storage properties. Here, the electrical field-driven structural evolutions of polymorphic nanodomains in 1400 nm ferroelectric Ba(Zr0.2Ti0.8)O3 (BZT) films by optical second-harmonic generation, along with X-ray diffraction and transmission electron microscopy analyses are revealed. The BZT films transform between a remnant state to a charged state with an improved energy efficiency (≈90%) and an excellent fatigue endurance (virtually no loss in energy efficiency and ≈25% loss in stored energy after 107 bipolar cycles @ 1.5 MV cm−1 maximum electric field). Phase separation is significantly increased after charge-discharge cycles. The performance is attributed to ultra-adaptive polymorphic nanodomains, which effectively accommodate the concurring elastic and electrical stress fields during electrical switching.

Orijinal dilİngilizce
Makale numarası2200465
DergiAdvanced Electronic Materials
Hacim8
Basın numarası10
DOI'lar
Yayın durumuYayınlandı - Eki 2022

Bibliyografik not

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

Finansman

This work was supported in part by the Air Force Office of Scientific Research (Grant No. FA9550-20-1-0388) (YHR, OK, TL, SG, and JO) and PSC-CUNY (Grant No. 63728-00 51). J. Ouyang acknowledges the partial financial support from the National Natural Science Foundation of China (Project Grant no. 51772175) and the Jinan City Science and Technology Bureau (Grant No. 2021GXRC055). H. Cheng acknowledges the partial support from the Jiangsu Province NSFC (Grant No. BK20180764). This work was supported in part by the Air Force Office of Scientific Research (Grant No. FA9550‐20‐1‐0388) (YHR, OK, TL, SG, and JO) and PSC‐CUNY (Grant No. 63728‐00 51). J. Ouyang acknowledges the partial financial support from the National Natural Science Foundation of China (Project Grant no. 51772175) and the Jinan City Science and Technology Bureau (Grant No. 2021GXRC055). H. Cheng acknowledges the partial support from the Jiangsu Province NSFC (Grant No. BK20180764).

FinansörlerFinansör numarası
Jiangsu Province NSFCBK20180764
PSC-CUNY
PSC‐CUNY63728‐00 51
Air Force Office of Scientific ResearchFA9550‐20‐1‐0388
Jinan Science and Technology Bureau2021GXRC055
National Natural Science Foundation of China51772175

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