Achieving Ohmic conduction behavior at high electric field via interface manipulation

Zhang, X.Y.; Xu, Ruixing; Gao, Xu; Li, M.; Shi, Xiang; Ji, Yanda; Qian, Fengjiao; Fan, Jiyu; Wang, H.Y.; Li, W.-W.; Yang, Hao

doi:10.1016/j.apsusc.2020.146093

Cited by 11 publications

(4 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The detailed microstructure of the BTO:Sm 2 O 3 /SRO/STO nanocomposite film was further investigated by a transmission electron microscope (TEM) (Figure c), revealing the layered structure of the BTO:Sm 2 O 3 /SRO/STO/mica. Also, we can see that self-assembled Sm 2 O 3 nanopillars are distributed and embedded in a BTO matrix. ,, High-resolution TEM image (Figure d) exhibits a defect-free and coherent interface at the interface between BTO and Sm 2 O 3 . Based on XRD and TEM results, high-quality heteroepitaxy of the BTO:Sm 2 O 3 /SRO/STO film on flexible mica substrates is delivered, as shown in Figure e.…”

Section: Resultssupporting

confidence: 55%

“…Also, we can see that self-assembled Sm 2 O 3 nanopillars are distributed and embedded in a BTO matrix. 29,30,32 High-resolution TEM image (Figure 1d) exhibits a defect-free and coherent interface at the interface between BTO and Sm 2 O 3 . Based on XRD and TEM results, highquality heteroepitaxy of the BTO:Sm 2 O 3 /SRO/STO film on flexible mica substrates is delivered, as shown in Figure 1e.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Based on the equation of , the out-of-plane tensile strain is calculated to be ∼2.62% for the BTO phase in the BTO:Sm 2 O 3 nanocomposite film. According to previous reports, , the observed tensile strain in BTO is induced by the lattice mismatch with the stiff Sm 2 O 3 phase, which is insulating (nonferroelectric material) and has a large elastic modulus of 125 GPa, compared to 67 GPa of BTO. , X-ray reciprocal space maps (RSMs) were used to determine the crystallographic orientation along the in-plane direction (Figure b). The detailed microstructure of the BTO:Sm 2 O 3 /SRO/STO nanocomposite film was further investigated by a transmission electron microscope (TEM) (Figure c), revealing the layered structure of the BTO:Sm 2 O 3 /SRO/STO/mica.…”

Section: Resultsmentioning

confidence: 99%

“…Barium titanate (BaTiO 3 , BTO) and its derivatives can be alternative candidates for designing lead-free piezoelectric sensors. , However, a low Curie temperature of 130 °C in BTO ceramics and a poor piezoelectric coefficient d 33 (<55 pm/V) in BTO films or nanowires restrict their practical applications around room temperature. Recently, strain engineering has been used for manipulating dielectric properties, improving the leakage current, and enhancing the ferroelectric Curie temperature and polarization in epitaxial BTO films grown on conventional rigid substrates. − However, these reported piezoelectric properties of epitaxial BTO films are still not comparable to those of PZT films (Table S1 in the Supporting Information). − …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

High-Temperature and Flexible Piezoelectric Sensors for Lamb-Wave-Based Structural Health Monitoring

Zhang

Wang

Gao

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Piezoelectric sensors can be utilized in Lamb-wave-based structural health monitoring (SHM), which is an effective method for aircraft structural damage detection. However, due to the inherent stiffness, brittleness, weight, and thickness of piezoelectric ceramics, their applications in aircraft structures with complex curved surfaces are seriously restricted. Herein, we report a flexible, light-weight, and highperformance BaTiO 3 :Sm 2 O 3 /SrRuO 3 /SrTiO 3 /mica film sensor that can be used in high-temperature SHM of aircraft. Enhanced ferroelectric Curie temperature (487 °C) and piezoelectric coefficient d 33 (120−130 pm/V) are achieved in BaTiO 3 , which can be attributed to the tensile strain developed by stiff Sm 2 O 3 nanopillars. Stable ferroelectricity and piezoelectricity are retained up to 150 °C. The flexible BaTiO 3 :Sm 2 O 3 / SrRuO 3 /SrTiO 3 /mica film is validated as an ultrasonic sensor with high sensitivity and stability for damage monitoring on aircraft structures with the curved surface ranging from 25 to 150 °C. Our work demonstrates that flexible and light-weight BaTiO 3 :Sm 2 O 3 /SrRuO 3 /SrTiO 3 /mica film sensors can be employed as high-temperature piezoelectric sensors for real-time SHM of aircraft structures with complex curved surfaces.

show abstract

Section: Resultssupporting

confidence: 55%

Section: ■ Results and Discussionmentioning

confidence: 99%