Synthesis, structural, electrical and dielectric properties of Zn–Zr doped strontium hexaferrite nanoparticles

Zinc-Zirconium doped Strontium hexaferrite SrZn x Zr x Fe 12−2x O 19 (where x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) have been successfully synthesized via sol–gel auto combustion technique. The as-synthesized samples were characterized by thermo gravimetric analysis, X-ray diffraction (XRD), scanning elec...

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Bibliographic Details
Published in:	Journal of materials science. Materials in electronics Vol. 24; no. 8; pp. 3101 - 3107
Main Authors:	Bhosale, Ravil R., Barkule, R. S., Shengule, D. R., Jadhav, K. M.
Format:	Journal Article
Language:	English
Published:	Boston Springer US 01-08-2013 Springer Springer Nature B.V
Subjects:	Applied sciences Characterization and Evaluation of Materials Chemistry and Materials Science Concentration (composition) Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science; rheology Dielectric properties Dielectric properties of solids and liquids Dielectrics, piezoelectrics, and ferroelectrics and their properties Diffraction Electrical resistivity Electronics Exact sciences and technology Materials Materials Science Materials synthesis; materials processing Nanopowders Nanoscale materials and structures: fabrication and characterization Optical and Electronic Materials Permittivity (dielectric function) Physics Scanning electron microscopy Strontium Synthesis Zinc Electrical Resistivity Measurement Ferrite Electrical Resistivity Dielectric Loss Tangent SrFe12O19 Grain size analysis Combustion synthesis Hexagonal ferrites Electrical conductivity Iron oxide Nanoparticle Tantalum nitride Powder Strontium Zinc addition Crystallites Phase space Space group Drift mobility Electrical characteristic Grain size Scanning electron microscopy Electrical properties Dielectric properties Doped materials Lattice parameters Dispersive spectrometry X ray diffraction Zinc Electrical measurement Zirconium Energy dispersion Sol gel process Electric resistivity
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Summary:	Zinc-Zirconium doped Strontium hexaferrite SrZn x Zr x Fe 12−2x O 19 (where x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) have been successfully synthesized via sol–gel auto combustion technique. The as-synthesized samples were characterized by thermo gravimetric analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The X-ray powder diffraction results showed that the sample was single phase with the space group of P6 3 /mmc. The lattice constant ‘a’ almost remains constant while ‘c’ increases as Zn–Zr concentration ‘x’ increases. The crystallite size obtained from XRD data is in the range of 36–47 nm. The average grain size as determined by SEM was found in the range of 40–90 nm. EDS analysis showed that the composition obtained is near stoichiometric. D.C. electrical resistivity measurements were carried out within the temperature range of 300–923 K. It is observed that the resistivity decreases whereas the drift mobility increases as Zn–Zr content ‘x’ increases. The activation energy is found to decrease with the concentration ‘x’. Dielectric measurements were carried out within the frequency range of 50 Hz–5 MHz. It is found that dielectric constant (ε′) and dielectric loss tangent (tan δ) both increases as the Zn–Zr concentration ‘x’ increases. Moreover, the structural, morphological, electrical and dielectric properties of Sr–M ferrite powders were strongly depend upon the synthesis condition.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0957-4522 1573-482X
DOI:	10.1007/s10854-013-1217-z