Structural characterization and enhanced magnetic and dielectric properties of Ce3+ substituted Co–Cr–Fe–O nano-ferrites synthesized using sol–gel method

Kadam, S. S.; More, V. D.; Gaikwad, P. K.; Batoo, K. M.; Hussain, Sajjad; Kadam, R. H.; Shirsath, S. E.; Kadam, A. B.

doi:10.1007/s00339-023-07021-1

Cited by 15 publications

(1 citation statement)

References 54 publications

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“…In accordance to this, the bulk pellets produced in the current work had their dielectric properties thoroughly investigated. Complex impedance spectroscopy is a non-destructive method for figuring out how dielectric characteristics, structure, and microstructure relate to one another [49][50][51][52].…”

Section: Dielectricpropertymentioning

confidence: 99%

Co-relation between Rietveld analysis, dielectric studies and impedance spectroscopy of the Ba1−xSrxTiO3 ceramics

Devi,

Chaudhary,

Hashim

et al. 2024

J Mater Sci: Mater Electron

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Barium strontium titanate (BST), with varying Sr doping levels (x = 0, 0.05, 0.075, 0.1, 0.15, 0.3), was successfully synthesized using the solid-state reaction technique. The aim was to investigate the microstructural, dielectric, and impedance properties as Sr doping increases. X-ray diffraction analysis revealed a tetragonal phase structure for these materials, belonging to the P4mm space group, confirmed via Rietveld refinement using the Fullprof suite. SEM analysis indicated the decrement in grain sizes ranging from 0.198 to 0.0582 μm as doping concentration increases. The temperature and frequency dependencies of the dielectric constant were examined, with the Curie temperature observed in the range of 295 to 351 K with decreasing trend with substitution of strontium in pure barium titanate, showing an increase in dielectric constant with rising temperatures and non-relaxor behavior. P–E loops of BST samples illustrated bulk ferroelectric behavior, with maximum values of retentivity and coercivity reaching 1.56 and 13.97, respectively, in the highly doped BST sample. Various analytical techniques, including Nyquist plots, real and imaginary components of impedance, conductivity measurements, modulus formalism, and determination of charge carrier activation energy, were employed to elucidate the relationships between microstructure and electrical properties. Temperature-dependent resistivity demonstrated the negative temperature coefficient of resistance (NTCR) behavior in Sr-doped barium titanate. Impedance studies revealed semicircular arcs in Nyquist plots, indicating contributions from both grains and grain boundaries. The formation of well-defined grains in the BST samples was further confirmed through modulus spectroscopy.

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Section: Dielectricpropertymentioning

confidence: 99%

Co-relation between Rietveld analysis, dielectric studies and impedance spectroscopy of the Ba1−xSrxTiO3 ceramics

Devi,

Chaudhary,

Hashim

et al. 2024

J Mater Sci: Mater Electron

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Effect of co-doping with Mg2+ and Ce3+ on the enhanced electrical and magnetic characteristics of cobalt nano ferrites

Suryanarayana,

Nagasree,

Shanmukhi

et al. 2024

J Mater Sci: Mater Electron

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Impact of Ce–Cu metal ions on structural, magneto-electrical properties of Co2+ based nano ferrites and their application in photo catalytic activity

Yelagandula,

Eragari,

Ramakrishna Reddy

et al. 2024

Chem. Pap.

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Cobalt based nanoferrites Co 1 − x Cu x Ce y Fe 2−y O 4 Where nano ferrites produced through citrate gel auto combustion technique and their structural and topographical studies were inspected through x-ray diffraction technique and eld emission scanning electron microscope. The structural analysis con rms the prepared nano ferrites having single-phase cubic spinel, along Fd3m space group. Crystalline size of the synthesized samples found 20-26 nm calculated by Debey Scherrer formula. Catalytic activity of the samples con rmed by dye degradation studies of methylene blue and acid red dye degradation. Magnetic behavior of the materials measured by a vibrating sample magnetometer, saturation magnetization gradually decreases as increasing Cu and Ce content and found to be 26 to 18 emu/gm. Electrical properties were measured by LCR meter.

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Structural characterization and enhanced magnetic and dielectric properties of Ce3+ substituted Co–Cr–Fe–O nano-ferrites synthesized using sol–gel method

Cited by 15 publications

References 54 publications

Co-relation between Rietveld analysis, dielectric studies and impedance spectroscopy of the Ba1−xSrxTiO3 ceramics

Co-relation between Rietveld analysis, dielectric studies and impedance spectroscopy of the Ba1−xSrxTiO3 ceramics

Effect of co-doping with Mg2+ and Ce3+ on the enhanced electrical and magnetic characteristics of cobalt nano ferrites

Impact of Ce–Cu metal ions on structural, magneto-electrical properties of Co2+ based nano ferrites and their application in photo catalytic activity

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