Structural, elastic and magnetic properties of Ca doped copper ferrite nanoparticles

Raji, P.; Kumar, K. Balachandra

doi:10.1016/j.physb.2022.413759

Cited by 9 publications

(4 citation statements)

References 53 publications

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“…[17,18] Tetrahedral site has higher wavenumber vibrations than octahedral site due to the shorter bond length between tetrahedral metal and oxygen ions. [18,19] Tetrahedral and octahedral vibration directions are perpendicular to each other. Tetrahedral vibration occurs along the connecting axis formed by a tetrahedral metal ion and neighboring oxygen ions, whereas octahedral vibration takes place perpendicular to the axis.…”

Section: Resultsmentioning

confidence: 99%

Magnetodielectric Comparison Study Between Microwave and Conventional Sintered NiCuZn Ferrites

Ramesh¹,

Sravanthi

Ashok³

et al. 2023

Macromolecular Symposia

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Ni 0.53 Cu 0.12 Zn 0.35 Fe 2 O 4 ferrite powder is synthesized using the microwave-assisted hydrothermal (M-H) technique. The synthesized powder is characterized using X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The morphology of the powder particles is examined using field effective scanning electron microscopy (FESEM). The powder is then sintered using microwave and conventional methods at 910°C/1.5 h and 910°C/4 h, respectively. The grain size, bulk density, d.c. resistivity, and saturation magnetization of both the sintered samples are measured and compared. The dielectric properties of both the sintered samples are measured at frequencies ranging from 1 MHz to 1.8 GHz. The research indicates that the sintering process has an impact on the magnetodielectric performance of ferrites. The change in properties resulting by the sintering method is briefly reviewed.

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Section: Resultsmentioning

confidence: 99%

Magnetodielectric Comparison Study Between Microwave and Conventional Sintered NiCuZn Ferrites

Ramesh¹,

Sravanthi

Ashok³

et al. 2023

Macromolecular Symposia

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Section: Resultsmentioning

confidence: 99%

“…Upon appropriate calcination, the homogeneity of the particle size distribution is achieved during the combustion of the acquired ash with 500°C. The average crystallite of CF and CG nanocomposite was determined using Debye Scherrer’s equation [48]. (2) D = 0.9 λ β cos θ , where D is the crystallite size, λ is the used wavelength, β is the full width at half maximum (FWHM), and θ is the Bragg’s diffraction angle.…”

Section: Resultsmentioning

confidence: 99%

Study of Barium Adsorption from Aqueous Solutions Using Copper Ferrite and Copper Ferrite/rGO Magnetic Adsorbents

Mary¹,

Vijaya²,

Bououdina

et al. 2022

Adsorption Science & Technology

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The development of advanced materials for the removal of heavy metal ions is a never-ending quest of environmental remediation. In this study, a facile and cost-effective approach was employed to synthesize copper ferrite (CF) and copper ferrite/reduced graphene oxide (CG) by microwave assisted combustion method for potential removal of barium ions from aqueous medium. The physiochemical characterizations indicated the formation of magnetic nanocomposite with an average crystallite size of CF and CG is 32.4 and 30.3 nm and with specific surface area of 0.66 and 5.74 m 2 /g. The magnetic results possess multidomain microstructures with saturation magnetization of 37.11 and 33.84 emu/g for CF and CG. The adsorption studies prove that upon addition of rGO on the spherical spinel ferrite, the adsorption performance was greatly improved for CG nanocomposite when compared with the bare CF nanoparticles. The proposed magnetic adsorbent demonstrated a relatively high Ba 2+ adsorption capacity of 161.6 mg•g -1 for CG nanocomposite when compared to 86.6 mg•g -1 for CF nanoparticles under optimum conditions (pH = 7 ; T = 25 °C). The pseudo-first-order (PFO), pseudo-second-order (PSO), and Elovich models were fitted to the kinetic data, the yielded R 2 value of 0.9993 (PSO) for CF and 0.9994 (PSO) for CG which is greater than the other two models, which signify that the adsorption process is chemisorption. Thermodynamic studies show that barium adsorption using CF and CG adsorbents is endothermic. The as-fabricated CuFe 2 O 4 /rGO nanocomposite represents a propitious candidate for the removal of heavy metal ions from aqueous solutions.

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“…2,[34][35][36] There are also studies claiming the lattice substitution of Ca 2+ in spinel ferrites and the corresponding variation of magnetic properties. 20,[37][38][39][40][41][42] Therefore, the direct atomic-scale microscopic observation of Ca 2+ occupation in the spinel lattice is the premise of revealing its doping mechanism, which not only benefits the construction of ferrite theory, but also promotes the development of high-performance ferrite products.…”

Section: Institute Of Advanced Magnetic Materials College Of Material...mentioning

confidence: 99%

Atomic-scale observation of calcium occupation in spinel cobalt ferrite towards the regulation of intrinsic magnetic properties

Bai,

Zhong,

Zhang

et al. 2023

Nanoscale

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Structural, elastic and magnetic properties of Ca doped copper ferrite nanoparticles

Cited by 9 publications

References 53 publications

Magnetodielectric Comparison Study Between Microwave and Conventional Sintered NiCuZn Ferrites

Magnetodielectric Comparison Study Between Microwave and Conventional Sintered NiCuZn Ferrites

Study of Barium Adsorption from Aqueous Solutions Using Copper Ferrite and Copper Ferrite/rGO Magnetic Adsorbents

Atomic-scale observation of calcium occupation in spinel cobalt ferrite towards the regulation of intrinsic magnetic properties

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