Dielectric, electrical and optical properties of aluminosilicate ceramics synthesized by solid-state reaction route

Biswal, Bijaylaxmi; Mishra, Dilip Kumar; Mohapatra, Jyoshnarani; Bhuyan, Satyanarayan

doi:10.1007/s43207-022-00193-1

Cited by 1 publication

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References 47 publications

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“…The density values of these composites are less in comparison to the theoretical density of commercially available mullite ceramic (3.26 g cm ─3 ). [ 31 ] Both the CaO‐MZ composites are having appreciable bulk density. However, plasma sintering has resulted in high densification of the CaO‐MZ composite.…”

Section: Resultsmentioning

confidence: 99%

Effect of Frequency and Temperature on Dielectric and Transport Properties of CaO stabilized ZrO₂@mullite composites

Biswal,

Mishra

2024

Cryst. Res. Technol.

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This study concerns the synthesis and structure related electrical property analysis of CaO doped ZrO2@mullite composites. Two synthesis techniques (solid state reaction route and thermal plasma sintering) are used which results the formation of a composite consisting of mixed phase of orthorhombic mullite, tetragonal and monoclinic zirconia. The lattice parameters, residual strains, average crystallite size and cell volume of these CaO‐doped ZrO2@mullite composites are obtained from XRD analysis. Stabilization of t‐ZrO2 phase at room temperature is confirmed. Porous microstructure observed in SEM images results in low dielectric constant value of these composites. At room temperature and selected frequency of 1MHz, the dielectric constant and loss factor of 4.7 and 3.826 × 10−2 is observed for conventional CaO stabilized ZrO2@mullite composite and that of 3.8 and 2.19 × 10−2 is reported for plasma sintered CaO stabilized ZrO2@mullite composite. The impedance spectroscopic analysis demonstrates the negative temperature coefficient of resistance (NTCR) behavior and non‐Debye type relaxation behavior of both the CaO stabilized ZrO2@mullite composites. A negligible effect of electrode polarization is realized in these composites. The electronic band gap of conventional and plasma sintered CaO stabilized ZrO2@mullite composites is found to be around 3eV.

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Section: Resultsmentioning

confidence: 99%

Effect of Frequency and Temperature on Dielectric and Transport Properties of CaO stabilized ZrO₂@mullite composites

Biswal,

Mishra

2024

Cryst. Res. Technol.

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Dielectric, electrical and optical properties of aluminosilicate ceramics synthesized by solid-state reaction route

Cited by 1 publication

References 47 publications

Effect of Frequency and Temperature on Dielectric and Transport Properties of CaO stabilized ZrO₂@mullite composites

Effect of Frequency and Temperature on Dielectric and Transport Properties of CaO stabilized ZrO₂@mullite composites

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Dielectric, electrical and optical properties of aluminosilicate ceramics synthesized by solid-state reaction route

Cited by 1 publication

References 47 publications

Effect of Frequency and Temperature on Dielectric and Transport Properties of CaO stabilized ZrO2@mullite composites

Effect of Frequency and Temperature on Dielectric and Transport Properties of CaO stabilized ZrO2@mullite composites

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Effect of Frequency and Temperature on Dielectric and Transport Properties of CaO stabilized ZrO₂@mullite composites

Effect of Frequency and Temperature on Dielectric and Transport Properties of CaO stabilized ZrO₂@mullite composites