Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O3 ceramic

Badapanda, T.; Senthil, V.; Rout, S. K.; Cavalcante, L. S.; Simões, Alexandre Zirpoli; Sinha, T.P.; Panigrahi, S.; Jesus, M. M. de; Longo, Elson; Varela, José Arana

doi:10.1016/j.cap.2011.03.056

Cited by 107 publications

(30 citation statements)

References 58 publications

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“…When the frequency reaches the characteristic frequency (ω01/τ), the dielectric constant drops. At very high frequencies, dipoles can no longer follow the field and ε′ ≈ ε ∞ [14]. The same kind of behavior has been observed in all our polymer composites.…”

Section: Resultssupporting

confidence: 72%

Dielectric relaxation behavior and electrical conduction mechanism in polymer-ceramic composites based on Sr modified Barium Zirconium Titanate ceramic

et al. 2012

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In this paper, we report the dielectric relaxation behavior and electrical conduction mechanism of Sr modified Barium Zirconium Titanate, (Ba 1-x Sr x Zr 0.1 Ti 0.9 O 3 (x0 0.1, 0.2, 0.3)) (BSZT) ceramic in the polyvinyl alcohol (PVA) matrix. The single phase BSZT ceramics are prepared by the conventional solid state route and are added to the polymer matrix at 25:75 volume percentage. Surface morphology of polymer ceramic composite identifies the uniform distribution of the ceramic particles in the polymer matrix. Dielectric and tangent loss spectrum of the composites indicates the distribution of relaxation time. Electric modulus analysis shows the relaxation peaks of bulk and interface properties, which follows the Arrhenius law. The ac conductivity spectrum of pure PVA obeys Jonchers power law and polymer composites obey the double power law which conduction mechanisms are explained by Jump Relaxation Model. The activation energy varies from the relaxation to conduction mechanism indicates that the different charge contributions are involved in both the processes.

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Section: Resultssupporting

confidence: 72%

Dielectric relaxation behavior and electrical conduction mechanism in polymer-ceramic composites based on Sr modified Barium Zirconium Titanate ceramic

et al. 2012

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“…5d). Finally, the effect of processing temperature on the intensified shrinkage and densification rates resulting in denser mass of the grains was analyzed [69].…”

Section: Rietveld Refinement Analysismentioning

confidence: 99%

Effect of sintering parameters using the central composite design method, electronic structure and physical properties of yttria-partially stabilized ZrO₂ commercial ceramics

Mendes

Costa

Araújo

et al. 2017

Materials Science-Poland

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In this work, the effect of sintering parameters on electronic structure and physical properties of yttria-partially stabilized ZrO 2 (YPSZ) commercial ceramics has been studied using the central composite design (CCD) method. The CCD method allows using empirical modelling with better fitting, by considering the interaction between both factors. Different temperature ranges and sintering times for processing of YPSZ ceramics have been used in order to evaluate the grain growth, hardness and volumetric shrinkage by the CCD method. X-ray diffraction patterns and Rietveld refinement data indicate that non-sintered YPSZ ceramics exhibits two phases related to tetragonal and monoclinic structures, while the sintered YPSZ ceramics exhibits a single phase related to a tetragonal structure. Moreover, the monoclinic structure presents zirconium (Zr) atoms coordinated to seven oxygen (O) atoms, while in the tetragonal structure Zr atoms are coordinated to eight O atoms. Field emission scanning electron microscopy images were employed to monitor the sintering and growth process. In addition, the response surfaces obtained from calculations presented the effect of thermal and kinetic variables on the physical properties such as average grain size, volumetric shrinkage and hardness of YPSZ ceramics.

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“…At frequencies above peak maximum in M", the carriers are confined to potential wells, being mobile only at short distances [23].…”

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Dielectric and electrical studies of Pr3+ doped nano CaSiO3 perovskite ceramics

Kulkarni

Nagabhushana

Parvatikar³

et al. 2014

Materials Research Bulletin

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Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O3 ceramic

Cited by 107 publications

References 58 publications

Dielectric relaxation behavior and electrical conduction mechanism in polymer-ceramic composites based on Sr modified Barium Zirconium Titanate ceramic

Dielectric relaxation behavior and electrical conduction mechanism in polymer-ceramic composites based on Sr modified Barium Zirconium Titanate ceramic

Effect of sintering parameters using the central composite design method, electronic structure and physical properties of yttria-partially stabilized ZrO₂ commercial ceramics

Dielectric and electrical studies of Pr3+ doped nano CaSiO3 perovskite ceramics

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Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O3 ceramic

Cited by 107 publications

References 58 publications

Dielectric relaxation behavior and electrical conduction mechanism in polymer-ceramic composites based on Sr modified Barium Zirconium Titanate ceramic

Dielectric relaxation behavior and electrical conduction mechanism in polymer-ceramic composites based on Sr modified Barium Zirconium Titanate ceramic

Effect of sintering parameters using the central composite design method, electronic structure and physical properties of yttria-partially stabilized ZrO2 commercial ceramics

Dielectric and electrical studies of Pr3+ doped nano CaSiO3 perovskite ceramics

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Effect of sintering parameters using the central composite design method, electronic structure and physical properties of yttria-partially stabilized ZrO₂ commercial ceramics