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Synthesis and Characterization of Strontium Doped Zinc Manganese Titanates


Affiliations
1 Material Research Lab, Department of Physics, Sri Krishnadevaraya University, Anantapur, A.P.-515003., India
     

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In the present research work, Strontium doped Zinc Manganese Titanate ceramic compounds were prepared by conventional solid state reaction technique with calcinations at high temperatures. Crystalline structure and lattice parameters for the compound have been determined by X-Ray diffraction analysis (XRD). Bulk densities of the sintered ceramics was measured by the Archimedes's method with xylene (density=0.87gm/cc) as the liquid media found to be 98-99% of the X-ray density. Micro structural analysis using Scanning Electron Microscopy (SEM) supplemented with Electron Dispersive x-ray Analysis (EDAX) were Carried out to find the grain size as well as the chemical composition of the given compound. Dielectric constant (εr) and Dielectric loss (tanδ) as a function of temperature measured are studied from frequencies 100 Hz to 100 KHz. The dielectric loss and dielectric constant increases gradually with an increase in temperature. At room temperature the AC conductivity value of Sr doped ZnMnTiO3 is found to be 2.30X10-7Ω-1cm-1 for the frequency 100 KHz. The activation energy is estimated from the slope of conductivity vs. inverse absolute temperature plot and found to be 1.05eV at higher temperature region for the frequency 10 KHz. These Sr doped ZnMnTiO3 ceramic materials have wide range of applications in the field of Microwave devices etc.

Keywords

ZnMnTiO3, SEM, EDAX, XRD, Activation Energy, Dielectric Constant, Dielectric Loss
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  • Synthesis and Characterization of Strontium Doped Zinc Manganese Titanates

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Authors

M. Maddaiah
Material Research Lab, Department of Physics, Sri Krishnadevaraya University, Anantapur, A.P.-515003., India
K. S. R. Chandra SekharRao
Material Research Lab, Department of Physics, Sri Krishnadevaraya University, Anantapur, A.P.-515003., India
A. GuruSampath Kumar
Material Research Lab, Department of Physics, Sri Krishnadevaraya University, Anantapur, A.P.-515003., India
T. Subba Rao
Material Research Lab, Department of Physics, Sri Krishnadevaraya University, Anantapur, A.P.-515003., India

Abstract


In the present research work, Strontium doped Zinc Manganese Titanate ceramic compounds were prepared by conventional solid state reaction technique with calcinations at high temperatures. Crystalline structure and lattice parameters for the compound have been determined by X-Ray diffraction analysis (XRD). Bulk densities of the sintered ceramics was measured by the Archimedes's method with xylene (density=0.87gm/cc) as the liquid media found to be 98-99% of the X-ray density. Micro structural analysis using Scanning Electron Microscopy (SEM) supplemented with Electron Dispersive x-ray Analysis (EDAX) were Carried out to find the grain size as well as the chemical composition of the given compound. Dielectric constant (εr) and Dielectric loss (tanδ) as a function of temperature measured are studied from frequencies 100 Hz to 100 KHz. The dielectric loss and dielectric constant increases gradually with an increase in temperature. At room temperature the AC conductivity value of Sr doped ZnMnTiO3 is found to be 2.30X10-7Ω-1cm-1 for the frequency 100 KHz. The activation energy is estimated from the slope of conductivity vs. inverse absolute temperature plot and found to be 1.05eV at higher temperature region for the frequency 10 KHz. These Sr doped ZnMnTiO3 ceramic materials have wide range of applications in the field of Microwave devices etc.

Keywords


ZnMnTiO3, SEM, EDAX, XRD, Activation Energy, Dielectric Constant, Dielectric Loss

References