Effect of ZnO on the microstructure and dielectric properties of BaTiO3 ceramic coatings prepared by plasma spraying

Liu, Zhe; Xing, Zhiguo; Wang, Haidou; Xue, Zifan; Chen, Shuying; Jin, Guo; Cui, Xiufang

doi:10.1016/j.jallcom.2017.08.175

Cited by 19 publications

(9 citation statements)

References 41 publications

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“…Additionally, the presence of TiO 2 as the varistor enhancer can contribute to the grain growth of ZnO [20]. But, the smaller ionic radius of Ti 4+ (0.061 nm) compared to Zn 2+ (0.074 nm) and Ba 2+ (0.135nm) lead to the substitution of Zn at the Ti site in the BaTiO 3 structure [21]. Therefore, the presence of Ti ions at the grain boundary enhances the grain growth of ZnO in the first segregation to the grain boundary.…”

Section: A Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Microstructure and Electrical Properties of Low-Voltage Barium Titanate Doped Zinc Oxide Varistor Ceramics

Shaifudin*,

Ghazali*,

Abdullah

et al. 2019

IJRTE

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In the present, varistor ceramics through the combination of zinc oxide (ZnO) with a perovskite material have become widespread because of their unique properties for a wide range of applications in electronic protection devices. Low-voltage zinc oxide (ZnO) varistors with fast response and highly nonlinear electrical properties for overvoltage protection in an integrated circuit are increasingly significant in the application of low-voltage electronics. The present study highlights the interaction between barium titanate (BaTiO3 ) and ZnO varistors through the employment of solid-state reaction method in the production of low-voltage varistors. The effects of BaTiO3 on the microstructure of ZnO varistors were analyzed through scanning electron microscopy (SEM), energy dispersive X-ray analysis spectroscopy (EDS) and X-ray diffraction (XRD). The EDS analysis and XRD measurements suggest the presence of ZnO and BaTiO3 phases. The electrical properties of BaTiO3 -doped ZnO varistors were examined based on the current density-electric field (J-E) characteristics measurement. The varistor properties showed the nonlinear coefficient (α) from 1.8 to 4.8 with the barrier height (φB) ranged from 0.70 to 0.88 eV. The used of BaTiO3 additive in ZnO varistors produced varistor voltages of 4.7 to 14.1 V/mm with the voltage per grain boundary (Vgb) was measured in the ranges 0.03 to 0.05 V. The lowest leakage current density was 348 µA/cm2 , obtained at the samples containing 12 wt.% BaTiO3 with high barrier height. The reduction in barrier height with increasing BaTiO3 content was associated with the excessive amount of BaTiO3 phase, hence cause the deterioration of active grain boundary due to the variation of oxygen (O) vacancies in the grain boundary.

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Section: A Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Microstructure and Electrical Properties of Low-Voltage Barium Titanate Doped Zinc Oxide Varistor Ceramics

Shaifudin*,

Ghazali*,

Abdullah

et al. 2019

IJRTE

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“…Zinc oxide has excellent dielectric features, great AC conductivity and small dielectric loss, therefore it can be utilized to produce dielectric varistors as well as transparent electrodes in the solar cell [39]. Nowadays, the miniaturization of devices requires dielectrics with great volumetric capacitive capability [40]. To verify the accuracy of devices, the dielectric role of ceramics is highly reliant on microstructural homogeneity [40].…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, the miniaturization of devices requires dielectrics with great volumetric capacitive capability [40]. To verify the accuracy of devices, the dielectric role of ceramics is highly reliant on microstructural homogeneity [40]. BaTiO 3 ceramics when doped with zinc oxide, the substitution of Ba 2+ by Zn 2+ in ZnO lattice took place, which is a temperature-dependent method and can extremely change dielectric characteristics [41].…”

Section: Introductionmentioning

confidence: 99%

“…It was noticed that diffusion of Zn 2+ ion crystal lattice reduced octahedral hole volume hence decreasing polarizability and dielectric characteristics [41]. However, zinc oxide at the grain barrier inhibits grain growth hence increasing dielectric characteristics [40]. Till now study of the dielectric role of barium doped zinc oxide was not present in the literature.…”

Section: Introductionmentioning

confidence: 99%

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Probing the impact of Ba on properties of ZnO at the nanoscale: optical, dielectric and antibacterial activity evolution

Kayani,

Farid,

Bashir

et al. 2024

Phys. Scr.

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The sol-gel dip coating technique was used to manufacture undoped and Barium doped zinc oxide thin films. Doping is extensively used to refine semiconductor properties. Without and with varying ratios of Ba 1-9 wt.% dopant, ZnO thin films have been manufactured. The effect of Ba on the dielectric, structural, antibacterial, optical and morphological characteristics of ZnO was investigated. The optical properties demonstrate that the bandgap of the pure ZnO thin film is higher than that of Ba-doped ZnO films, which is beneficial for improving solar cell performance. According to the XRD data, all films of ZnO have hexagonal wurtzite structures According to XRD structural analysis; the incorporation of Ba lowers the crystallinity of ZnO thin films by reducing the crystallite size. The Ba doping changes the surface roughness and morphology. The hopping process defines the dielectric characteristics that follow Koop’s theory as well as the Maxwell-Wagner model. A lower dielectric constant makes it ideal for high-frequency devices. These films exhibit ferromagnetism. Barium-doped zinc oxide photocatalyst could successfully decompose methylene blue dye by making it suitable for wastewater treatment.Ba doping effectively kills both gram-negative and gram-positive bacteria. They have antimicrobial applications in the food industry and biomedicine.

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“…6,7,9 Some of these piezo ceramics are lead zirconate titanate (PZT), BaTiO 3 and ZnO, etc. 11,12 The high mechanical properties and high electromechanical coupling coefficient of ceramics make them a suitable candidate for energy harvesting devices. 2,4 Apart from these properties some electronics devices simultaneously require properties like the flexibility to bend, twist, fold and stretch.…”

Section: Introductionmentioning

confidence: 99%

On synergistic effect of BaTiO₃ and graphene reinforcement in polyvinyl diene fluoride matrix for four dimensional applications

Sharma

Singh

Batish

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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This work presents the synergistic effect of BaTiO3 and graphene (Gr) reinforcement in polyvinyl diene fluoride (PVDF) matrix by chemical-assisted mechanical blending (CAMB) for possible 4D applications. The PVDF matrix was prepared (in form of filament) by solvent casting followed by twin-screw extrusion (TSE) as CAMB process. The filament was used on fused deposition modelling (FDM) setup for preparing standard flexural and pull-out specimens. The mechanical testing revealed that the parts printed with 100% in-fill density (ID), 70 mm/s infill speed (IS), and 45° in-fill angle (IA) has shown better flexural strength (FS). For pull-out properties, part printed at IS 90 mm/s, 0° IA, and 100% ID have shown better results. Further optimized settings of FS were used to 3D print thin cylindrical discs followed by electric poling (for possible piezoelectric properties). The results of X-ray diffraction (XRD) and Fourier transmission infrared spectroscopy (FTIR) analysis show more β-phase formation in the electrically poled sample as compared to non-poled specimen. Moreover, XRD spectra show the homogenous dispersion of doped material in the PVDF matrix. The piezoelectric coefficient (d33) 30.2pC/N was observed on 3D printed specimen (prepared from filament processed with CAMB), suitable for 4D applications.

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Effect of ZnO on the microstructure and dielectric properties of BaTiO3 ceramic coatings prepared by plasma spraying

Cited by 19 publications

References 41 publications

Microstructure and Electrical Properties of Low-Voltage Barium Titanate Doped Zinc Oxide Varistor Ceramics

Microstructure and Electrical Properties of Low-Voltage Barium Titanate Doped Zinc Oxide Varistor Ceramics

Probing the impact of Ba on properties of ZnO at the nanoscale: optical, dielectric and antibacterial activity evolution

On synergistic effect of BaTiO₃ and graphene reinforcement in polyvinyl diene fluoride matrix for four dimensional applications

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Effect of ZnO on the microstructure and dielectric properties of BaTiO3 ceramic coatings prepared by plasma spraying

Cited by 19 publications

References 41 publications

Microstructure and Electrical Properties of Low-Voltage Barium Titanate Doped Zinc Oxide Varistor Ceramics

Microstructure and Electrical Properties of Low-Voltage Barium Titanate Doped Zinc Oxide Varistor Ceramics

Probing the impact of Ba on properties of ZnO at the nanoscale: optical, dielectric and antibacterial activity evolution

On synergistic effect of BaTiO3 and graphene reinforcement in polyvinyl diene fluoride matrix for four dimensional applications

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On synergistic effect of BaTiO₃ and graphene reinforcement in polyvinyl diene fluoride matrix for four dimensional applications