Crystallographic orientation dependent dielectric properties of epitaxial BaTiO3 thin films

Zhang, Wei; Cheng, Hongbo; Yang, Qiong; Hu, Fangren; Ouyang, Jun

doi:10.1016/j.ceramint.2015.11.122

Cited by 40 publications

(20 citation statements)

References 36 publications

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“…Figure 3(b) shows the influence of polarization temperature on the piezoelectric constant of 90%BaTiO 3 /10%HA composites. The d 33 significantly increased with the increasing polarization temperature but remained constant after the temperature reached 130 °C 33 . The formation of electric domains has a tendency to follow the preferential orientation of the external electric field.…”

Section: Resultsmentioning

confidence: 93%

Fabrication and in vitro biological properties of piezoelectric bioceramics for bone regeneration

Tang

et al. 2017

Sci Rep

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123

101

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The piezoelectric effect of biological piezoelectric materials promotes bone growth. However, the material should be subjected to stress before it can produce an electric charge that promotes bone repair and reconstruction conducive to fracture healing. A novel method for in vitro experimentation of biological piezoelectric materials with physiological load is presented. A dynamic loading device that can simulate the force of human motion and provide periodic load to piezoelectric materials when co-cultured with cells was designed to obtain a realistic expression of piezoelectric effect on bone repair. Hydroxyapatite (HA)/barium titanate (BaTiO3) composite materials were fabricated by slip casting, and their piezoelectric properties were obtained by polarization. The d33 of HA/BaTiO3 piezoelectric ceramics after polarization was 1.3 pC/N to 6.8 pC/N with BaTiO3 content ranging from 80% to 100%. The in vitro biological properties of piezoelectric bioceramics with and without cycle loading were investigated. When HA/BaTiO3 piezoelectric bioceramics were affected by cycle loading, the piezoelectric effect of BaTiO3 promoted the growth of osteoblasts and interaction with HA, which was better than the effect of HA alone. The best biocompatibility and bone-inducing activity were demonstrated by the 10%HA/90%BaTiO3 piezoelectric ceramics.

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Section: Resultsmentioning

confidence: 93%

Fabrication and in vitro biological properties of piezoelectric bioceramics for bone regeneration

Tang

et al. 2017

Sci Rep

Self Cite

123

101

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“…Although there have been studies that correlate optimum dielectric properties with a preferred orientation [26][27][28], we will demonstrate this is not the main contributing factor to the difference in properties between these two regions.…”

Section: Experimental Methodsmentioning

confidence: 63%

Origin of improved tunability and loss in N2 annealed barium strontium titanate films

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Bakaimi

Hayden

et al. 2020

Phys. Rev. Materials

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“…The 3 (0) mainly contributes to the extrinsic response, while the 3 (v) to the intrinsic response because of the suppressed extrinsic response under high electric eld. 32 The relative high tunability makes the lms suitable for microwave and electrically tunable radio frequency applications.…”

Section: Resultsmentioning

confidence: 99%

Microstructure and electric properties of BCZT thin films with seed layers

et al. 2017

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Lead free Ba 0.99 Ca 0.01 Ti 0.98 Zr 0.02 O 3 (BCZT) thin films with seed layers were prepared by using sol-gel processing technique. The seed layers, ranging from 10 nm to 40 nm, were introduced between the BCZT films and the Pt(111)/Ti/SiO 2 /Si substrates. The effects of seed layer thickness on the structure and dielectric properties of the thin films were investigated. With the increase of seed layer thickness, the grain size of the BCZT thin films increases from about 100 nm to 300 nm, accordingly, the dielectric constants decrease at lower frequency. The highest dielectric tunability is 34.5% for the films with a 20 nm-thick seed layer. Improved effective piezoelectric coefficients (d 33 ) were observed in the BCZT thin films. The maximum d 33 value of BCZT thin films with a 30 nm-thick seed layer is approximately 70 pm V À1, which is comparable to that of polycrystalline PZT thin films. The seed layer thickness dependence of the electric properties is attributed to the dipole polarization. This demonstrated the possibility to control the microstructure and improve properties of BCZT thin films, which could be exploited for functional devices that demand high quality.

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Crystallographic orientation dependent dielectric properties of epitaxial BaTiO3 thin films

Cited by 40 publications

References 36 publications

Fabrication and in vitro biological properties of piezoelectric bioceramics for bone regeneration

Fabrication and in vitro biological properties of piezoelectric bioceramics for bone regeneration

Origin of improved tunability and loss in N2 annealed barium strontium titanate films

Microstructure and electric properties of BCZT thin films with seed layers

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