Investigation of crystal structure, dielectric properties, impedance spectroscopy and magnetic properties of (1-x)BaTiO3 – (x)Ba0.9Ca0.1 Fe12O19 multiferroic composites

Kumari, Anand; Sanghi, Sujata; Agarwal, Ashish; Singh, Ompal

doi:10.1016/j.ceramint.2021.04.311

Cited by 21 publications

(6 citation statements)

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“…The power law's exponent parameter, ‘ n ’, takes on values between 0 and 1, which indicate the amount of interaction between mobile ions and their surroundings and the degree to which they deviate from Debye's behaviour. 76 Fig. 6(b)–(e) depict the power law fitting to the conductivity of the 0.5BZT–0.5CNF– $ % GO ( $ = 0, 0.5, 1, 1.5) composites.…”

Section: Resultsmentioning

confidence: 99%

A graphene oxide decorated BZT–CNF composite through hybrid microwave processing: an advanced multifunctional material for superior microwave shielding applications

Parhi,

Thirumalasetty,

James

et al. 2024

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

A graphene oxide decorated BZT–CNF composite through hybrid microwave processing: an advanced multifunctional material for superior microwave shielding applications

Parhi,

Thirumalasetty,

James

et al. 2024

J. Mater. Chem. A

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“…By using the inverse Fourier Transform of (equation ( 1)), one can determine the electron density, which is given as [37]:…”

Section: Structural and Morphological Propertiesmentioning

confidence: 99%

Enhancing structural and magnetic properties of BaFe₁₂O₁₉ nanoparticles through co-substitution (Co-Mn): A promising approach for permanent magnet applications

Moatoshi,

Sarma,

Borah

2023

Phys. Scr.

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In-depth study into the creation and improvement of rare-earth free permanent magnets, particularly ferrites, has been sparked by recent economic and environmental concerns. M-type barium hexaferrites (BaFe12O19, pure BHF) are a class of low-cost permanent magnets with an excellent curie temperature and good resistance to oxidation and corrosion that are significant from a technological perspective. In the current study, the experimental conditions are optimized to obtain barium hexaferrite (BaFe12O19) co-substituted with transition elements (Co and Mn) (BaFe12-2xCoxMnxO19) via the chemical co-precipitation method. In this framework, different substitution possibilities will be investigated. The structure, morphology, vibrational spectrum, and thermal stability of the generated nanoparticles were revealed using powder X-ray diffraction (XRD), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). Rietveld refinement was used to estimate the average bond length and bond angle in order to determine the impact of superexchange interaction. Based on more precise structural characteristics, the atomic occupation and distribution of bonds are depicted from their charge density graph. For all the synthesized materials, the maximum energy product (BH)max and magnetic characteristics (VSM) were also investigated. The potential causes of this phenomenon were examined and discussed at length.

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“…In the present study, the dielectric constant of the fabricated Ba 1−2x Ho 2x Ti 1−x Mn x O 3 (x = 0, 0.02, 0.04, and 0.06) piezoceramics has declined by increasing the frequency. Indeed, the dielectric constant of Ba 1−2x Ho 2x Ti 1−x Mn x O 3 (x = 0, 0.02, 0.04, and 0.06) piezoceramics is diminished as the frequency rose owing to the domain wall motion phenomena [53][54][55]. In the entire samples at low frequencies the domain walls in the fabricated Ba 1−2x Ho 2x Ti 1−x Mn x O 3 were moved effortlessly, aligning with the applied electric field, thus elevating the dielectric constant.…”

Section: Dielectric and Piezoelectric Propertiesmentioning

confidence: 99%

Ho-Mn co-doping in barium titanate piezoceramics via sol-gel process followed by microwave and conventional heating

et al. 2023

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Co-doped barium titanate (BT) piezoceramics are applied in advanced energy harvesting systems. In the present study, Ba1-2xHo2xTi1-xMnxO3 (x=0, 0.02, 0.04, and 0.06) were produced via the sol-gel-assisted solid state co-doping technique followed by microwave and conventional heating. In the current investigation, the synthesizing and phase characterization, allotropic transition, morphological examination, elemental analysis and dielectric-piezoelectric responses were investigated by X-Ray Diffraction (XRD), Differential Scanning Calorimetry (DSC) and Thermo-Gravimetric Analysis (TGA), Field-Emission Scanning Electron Microscope (FESEM), Energy-Dispersive x-ray Spectroscopy (EDS), Mapping analysis and inductance-Capacitance-Resistance meter (LCR meter) techniques, respectively. The XRD pattern and DSC/ TGA outcomes demonstrated that tetragonal BT phases without minor BaCO3 secondary phases are synthesized properly, and that the negligible unsolicited BaCO3 phases are thoroughly calcined by a microwave at 900℃. Doping resulted in an increase in tetragonality (c/a) of 0.19%, 0.15%, and 0.04%, respectively, compared to the pure calcined BT. Additionally, the crystallite size of BT decreased significantly by 59%, 58%, and 52%, respectively. The results revealed that the microwave-sintered samples have higher purity, drastic delicate and finer grain size distribution, and superior tetragonal-ity with respect to the conventionally sintered furnace samples. Furthermore, the piezoelectric constant for the microwave sintered and the conventionally sintered samples with the same value of x=0.04 were 390 and 370 (pC/N), respectively, which established that the sintering method has satisfactory affection (approximately 6%) on the piezo function of the samples. Eventually, the prepared samples which had 0, 2, 4, and 6 % moles of Ho3+-Mn2+ cations and were sintered by a microwave compared to the similar specimens fabricated by the furnace had superior dielectric constants of 2.6, 1.1, 2.2 and 2.9 times, respectively.

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Investigation of crystal structure, dielectric properties, impedance spectroscopy and magnetic properties of (1-x)BaTiO3 – (x)Ba0.9Ca0.1 Fe12O19 multiferroic composites

Cited by 21 publications

References 50 publications

A graphene oxide decorated BZT–CNF composite through hybrid microwave processing: an advanced multifunctional material for superior microwave shielding applications

A graphene oxide decorated BZT–CNF composite through hybrid microwave processing: an advanced multifunctional material for superior microwave shielding applications

Enhancing structural and magnetic properties of BaFe₁₂O₁₉ nanoparticles through co-substitution (Co-Mn): A promising approach for permanent magnet applications

Ho-Mn co-doping in barium titanate piezoceramics via sol-gel process followed by microwave and conventional heating

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Investigation of crystal structure, dielectric properties, impedance spectroscopy and magnetic properties of (1-x)BaTiO3 – (x)Ba0.9Ca0.1 Fe12O19 multiferroic composites

Cited by 21 publications

References 50 publications

A graphene oxide decorated BZT–CNF composite through hybrid microwave processing: an advanced multifunctional material for superior microwave shielding applications

A graphene oxide decorated BZT–CNF composite through hybrid microwave processing: an advanced multifunctional material for superior microwave shielding applications

Enhancing structural and magnetic properties of BaFe12O19 nanoparticles through co-substitution (Co-Mn): A promising approach for permanent magnet applications

Ho-Mn co-doping in barium titanate piezoceramics via sol-gel process followed by microwave and conventional heating

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Enhancing structural and magnetic properties of BaFe₁₂O₁₉ nanoparticles through co-substitution (Co-Mn): A promising approach for permanent magnet applications