Microstructural, structural and electrical properties of bilayered BaZr 0.05 Ti 0.95 O 3 /Ba 0.75 Sr 0.25 TiO 3 ceramics

Serrano, Antonio Guerreiro; Bonaventura, André Luis; Boschilia, Renato; Antonelli, Eduardo

doi:10.1016/j.materresbull.2016.11.016

Cited by 12 publications

(4 citation statements)

References 16 publications

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“…For instance, Ba0.8Sr0.2TiO3 has high εr value about 4800 at Tc ~ 65 °C and low tan δ around 0.05 in the region of Tc at 10 kHz [3]. Meanwhile, strontium and zirconium co-doped BaTiO3 (BSZT) has been widely studied due to their good pyroelectric, piezoelectric properties and electrocaloric effect [4][5][6][7][8][9]. It was reported that for Ba0.60Sr0.40Ti1−yZryO3 composition with 20% Zr has decreased the dielectric loss from 0.075 for pure, down to 0.0166 [5].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Dielectric Properties of Ba0.85Sr0.15TiO3 Ceramic by 8% Zirconium Doping

Muhsen

Nasir

Osman

et al. 2022

Advances in Science and Technology

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The dielectric properties and crystal structure of Ba0.85Sr0.15TiO3 and Ba0.85Sr0.15Ti0.92Zr0.08O3 ceramics were studied. The samples were synthesized by using solid-state method. The results show that the samples were single phase. The Ba0.85Sr0.15TiO3 exhibited tetragonal structure (space group P4mm), while with addition of 8 mol% Zr into Ba0.85Sr0.15TiO3 it shows that the sample exhibited orthorhombic structure (space group Amm2). The dielectric constant value increased from 1094 for pure, up to 4211 for Ba0.85Sr0.15Ti0.92Zr0.08O3 ceramic at Tc measured at 1 kHz. The Tc decreased from 80 °C down to 60 °C as 8 mol% Zr ions doped into Ba0.85Sr0.15TiO3 composition. The Ba0.85Sr0.15Ti0.92Zr0.08O3 ceramic exhibited lower dielectric loss, tan δ about 0.006 compared to Ba0.85Sr0.15TiO3 ceramic (tan δ = 0.009) when measured at 110 °C with frequency 1 kHz. The slope at low frequency region in capacitance vs frequency plot for both samples attributed by the grain boundary effect, whereas the high frequency plateau associated with the bulk response. The impedance spectroscopy analysis results show that both samples are dominated by the bulk response when an incomplete semicircle arc was observed in Zʺ vs Zʹ plot.

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Section: Introductionmentioning

confidence: 99%

Enhanced Dielectric Properties of Ba0.85Sr0.15TiO3 Ceramic by 8% Zirconium Doping

Muhsen

Nasir

Osman

et al. 2022

Advances in Science and Technology

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“…These classes of materials combine unusual properties that are not achievable by conventional materials. However, little attention has been paid to the study and characterization of electroceramic composites (ceramic/ ceramic) [17]. The high temperatures required to sinter ceramics make it difficult to obtain ceramic composites once these temperatures allow the diffusion between the ions.…”

Section: Introductionmentioning

confidence: 99%

Cold sintering and electric characterization of ZnO-BaTiO3 composites

2021

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The sintering is an essential step in the processing of ceramics materials. A number of researchers have reported new techniques for sintering. However, in general, the process still demands high temperatures. This paper reports the results of the cold sintering of ZnO-BaTiO 3 composites. The microstructural, structural, and electric properties of the composite were studied. We obtained high densities (>95%) for pure ZnO and for the composition with 10 wt% of BaTiO 3 at a low temperature of sintering (250 °C/1 h). The increase of BaTiO 3 content reduced the grain size and degraded the sinterability of ZnO. The crystalline structure was investigated by X-ray diffraction and confirmed the separation of the phases after the cold sintering. The BaTiO 3 added in the composite reduced the values of conductivity, permittivity, and also the dielectric loss.

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“…1. Advanced ceramics are characterized due to their optical, mechanical, thermal, electrical, multiferroic, magnetic, and ferroelectric properties [1][2][3].…”

Section: Introductionmentioning

confidence: 99%