Dielectric properties of Mg-doped Ba0.6Sr0.4TiO3 ceramics prepared by using sol–gel derived powders

Wang, Jiangying; Zhang, Jingji; Yao, Xi

doi:10.1016/j.jallcom.2010.06.140

Cited by 23 publications

(6 citation statements)

References 20 publications

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“…However, the current dielectric materials cannot satisfy these two requirements. Among various dielectric materials, barium strontium titanate (BST) based ceramics have been widely investigated for energy storage capacitors because of their extremely high dielectric constant and relatively low dielectric loss [6][7][8][9]. In accordance with the energy density equation for nonlinear dielectrics [1], it can be found the high energy density in the dielectrics relies more on the high E b .…”

Section: Introductionmentioning

confidence: 99%

Effects of SrO–B2O3–SiO2 glass additive on densification and energy storage properties of Ba0.4Sr0.6TiO3 ceramics

Chen

et al. 2012

J Mater Sci: Mater Electron

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SrO-B 2 O 3 -SiO 2 glass powders were prepared and employed as sintering aids to reduce the sintering temperature of Ba 0.4 Sr 0.6 TiO 3 ceramics. The effects of glass content and sintering temperature on the densification, dielectric properties and energy storage properties of Ba 0.4 Sr 0.6 TiO 3 ceramics have been investigated. The relative density characterization results indicate that densification of Ba 0.4 Sr 0.6 TiO 3 ceramics with glass content becomes apparently from sintering temperature of 1,060°C. XRD results show all Ba 0.4 Sr 0.6 TiO 3 ceramics exhibit a perovskite structure without the formation of a secondary phase. The dielectric constant and dielectric loss decreased gradually with increasing glass content. The relationship between dielectric constant and breakdown strength was discussed using the thermochemical model. A discharged energy density of 0.44 J/cm 3 with an energy efficiency of 67.4% was achieved for Ba 0.4 Sr 0.6 TiO 3 ceramic with 2.0 wt% glass addition sintered at 1,180°C.

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Section: Introductionmentioning

confidence: 99%

Effects of SrO–B2O3–SiO2 glass additive on densification and energy storage properties of Ba0.4Sr0.6TiO3 ceramics

Chen

et al. 2012

J Mater Sci: Mater Electron

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“…Since the atomic radius of Mg (0.72Å) is smaller than Ba (1.35Å) and when a smaller element has substituted a larger ion, on whole there is lattice contraction. Wang et al in 2010 and Gao et al in 2020 have also reported the lattice contraction and cubic structure of barium strontium titanate on doping magnesium [17,19]. The average crystallite size (t) of magnesium substituted barium strontium titanate powder samples is calculated using Scherrer's formula as mention below:…”

Section: Structural and Microstructural Analysismentioning

confidence: 99%

Observation of high dielectric properties of Mg-substituted BST ceramic synthesized by conventional solid-state route

Karol

Prakash

Sharma

2021

J Mater Sci: Mater Electron

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Barium Strontium Titanate exhibits ferroelectric or paraelectric behaviour that depends upon the composition and other factors, making it suitable for a number of applications. We have adopted conventional solid state reaction route to synthesize magnesium substituted barium strontium titanate with low concentration of Mg (Mg= 0.005, 0.010 and 0.015). X-ray diffraction has con rmed the perovskite cubic single phase. The dielectric studies were carried out as a function of temperature at different xed frequencies (1kHz, 10kHz, 50kHz and 100kHz) and as a function of frequency at room temperature. The Curie's temperature of pure BST was 96°C and for Mg substituted BST samples it dropped from 85°C to 63°C. The dielectric permittivity rstly suppressed and then maximum value observed for Mg content 0.015 and dielectric loss is also less than one. The remanance (P r ) and coercivity (E c ) are obtained and analysed for ceramics samples. Improvement in dielectric properties due to substitution of Magnesium is observed.

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“…In recent years, among various dielectric materials, barium strontium titanate Ba x Sr 1Àx TiO 3 -based ceramics, as a good kind of pulse capacitor, have been widely investigated [6,7]. These materials play a critical role in energy storage capacitors because of their extremely high dielectric constant permittivity (corresponding to a high capacitance value) as well as relatively low dielectric loss [8,9]. However, undoped Ba x Sr 1Àx TiO 3 ceramics cannot be applied to energy storage application directly due to their low breakdown strength (BDS), which is, in principle, ascribed to the existence of unavoidable chemical defects yielded during the preparation process.…”

Section: Introductionmentioning

confidence: 99%

Energy storage properties in Ba 0.4 Sr 0.6 TiO 3 ceramics with addition of semi-conductive BaO–B 2 O 3 –SiO 2 –Na 2 CO 3 –K 2 CO 3 glass

Wang

Jin

Shu

et al. 2014

Journal of Alloys and Compounds

110

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Dielectric properties of Mg-doped Ba0.6Sr0.4TiO3 ceramics prepared by using sol–gel derived powders

Cited by 23 publications

References 20 publications

Effects of SrO–B2O3–SiO2 glass additive on densification and energy storage properties of Ba0.4Sr0.6TiO3 ceramics

Effects of SrO–B2O3–SiO2 glass additive on densification and energy storage properties of Ba0.4Sr0.6TiO3 ceramics

Observation of high dielectric properties of Mg-substituted BST ceramic synthesized by conventional solid-state route

Energy storage properties in Ba 0.4 Sr 0.6 TiO 3 ceramics with addition of semi-conductive BaO–B 2 O 3 –SiO 2 –Na 2 CO 3 –K 2 CO 3 glass

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