Sintering dependent Ca2+ solubility in barium titanate synthesized by sol–gel auto combustion method

Dash, Smaranika; Mohanty, Hari Sankar; Bhoi, Krishnamayee; Kant, Ravi; Kumar, Ashok; Thomas, Reji; Pradhan, Dillip K.

doi:10.1007/s10854-018-0224-5

Cited by 9 publications

(2 citation statements)

References 67 publications

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“…The above precursors were mixed stoichiometrically for the desired composition with a minimum amount of distilled water while maintaining F/O ratio to 1. The detailed synthesis procedure was described elsewhere [29]. The samples were then calcined at 900 °C for 6 hour.…”

Section: Methodsmentioning

confidence: 99%

Enhanced ferroelectric and piezoelectric properties of BCT-BZT at the morphotropic phase boundary driven by the coexistence of phases with different symmetries

et al. 2021

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The discovery of lead-free piezoelectric materials is crucial for future information and energy storage applications. Enhanced piezoelectric and other physical properties are commonly observed near the morphotropic phase boundary (MPB) composition of ferroelectric solid solutions. The (1-x)Ba(Zr 0.2 Ti 0.8 )O 3 -x(Ba 0.7 Ca 0.3 )TiO 3 (BZT-xBCT) system exhibits a large electromechanical response around its MPB region at x=0.5. We report experimental and theoretical results of BZT-xBCT over a wide composition range (0.3≤x≤1.0). X-ray diffraction and Raman spectroscopy studies indicate a composition-induced structural phase transition from a rhombohedral (R3m) phase at x≤0.4 to a tetragonal (P4mm) phase at x≥0.6 through a multiphase coexistence region at 0.45≤x≤0.55 involving orthorhombic + tetragonal (Amm2+P4mm) phases. First-principles calculations elucidate the phase competition in the coexistence region. The critical composition (x= 0.5) displays enhanced dielectric, ferroelectric and piezoelectric properties, where notably d 33 ~ 320 pC/N. This work provides clear evidence of Amm2+P4mm crystallographic phases in the MPB region, which is responsible for the improved functional properties.

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Section: Methodsmentioning

confidence: 99%

Enhanced ferroelectric and piezoelectric properties of BCT-BZT at the morphotropic phase boundary driven by the coexistence of phases with different symmetries

et al. 2021

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“…Generally, the solubility limits of Ca 2+ , Zr 4+ and Sn 4+ in BaTiO 3 are around 20–30%. 36–39 Co-doping of these ions can decrease the solubility limit, resulting in impure phases ( e.g. , multi-cation oxides) at a lower doped content.…”

Section: Resultsmentioning

confidence: 99%

Design of lead-free BCZT-based ceramics with enhanced piezoelectric energy harvesting performances

Merselmiz

Hanani

Mezzane

et al. 2022

Phys. Chem. Chem. Phys.

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Enhancing functional properties of PVDF-HFP/BZT-BCT polymer-ceramic composites by surface hydroxylation of ceramic fillers

Dash

Thakur

Kumar

et al. 2021

Ceramics International

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Sintering dependent Ca2+ solubility in barium titanate synthesized by sol–gel auto combustion method

Cited by 9 publications

References 67 publications

Enhanced ferroelectric and piezoelectric properties of BCT-BZT at the morphotropic phase boundary driven by the coexistence of phases with different symmetries

Enhanced ferroelectric and piezoelectric properties of BCT-BZT at the morphotropic phase boundary driven by the coexistence of phases with different symmetries

Design of lead-free BCZT-based ceramics with enhanced piezoelectric energy harvesting performances

Enhancing functional properties of PVDF-HFP/BZT-BCT polymer-ceramic composites by surface hydroxylation of ceramic fillers

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