Preparation Conditions of the Ferrites

Paulus, M.

doi:10.1016/b978-0-12-313350-2.50018-8

Cited by 9 publications

(6 citation statements)

References 23 publications

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Section: Methodsmentioning

confidence: 99%

“…The Ni0.95−xZn0.05CoxFe2O4 (where x = 0.01, 0.02, 0.03) were prepared by soft chemical route method [34][35][36][37]. In the process, the nitrates of Nickel, Zinc, and Cobalt are mixed with Ferric citrate in a molar ratio of 1:1 [37,38]. The ammonium hydroxide is added until the solution became neutral and is dried for 10 to 12 hours with the addition of ethylene glycol until a puffy and porous dry gel is obtained.…”

Section: Methodsmentioning

confidence: 99%

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Complex impedance analysis of soft chemical synthesized NZCF systems

et al. 2023

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The soft chemical method was adopted to prepare of cobalt-substituted nickel-zinc ferrites (Ni0.95-x Zn0.05COx Fe2O4 for x = 0.01, 0.02 and 0.03). We have recently studied their structural, morphological, and magnetic properties, initial permeability, and dielectric constant. They were found to be with cubic ferromagnetic spinel structure, the morphology of which is suitable for high-density recording media. The impedance has a major role in characterizing the electrical and magnetic properties of the sample, which are dependent on their permeability and dielectric constant. So, this study will verify the values obtained before. Next, the energy stored in a capacitor is directly proportional, and its size is inversely proportional to the dielectric constant. Similarly, the resistance offered by a material to the magnetic field to pass through it is related to permeability. This study will focus on the variation of impedance with Co2+ concentration. The results were derived with the equivalent circuit model. The impedance analysis is also important in the biological field having a name of Bio-Impedance Analysis (BIA), for determining nutritional status, and many more.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Complex impedance analysis of soft chemical synthesized NZCF systems

et al. 2023

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“…The Ni 0.95-x Zn 0.05 Co x Fe 2 O 4 and Zn 1-x Ni 0.05 Co x Fe 2 O 4 for x = 0.00, 0.01, 0.02, 0.03, 0.04, 0.05 and 0.06 were synthesized by soft chemical route process [28]- [31]. In the process, the ferric citrate and the nitrates of Nickel, Zinc, and Cobalt were mixed in 1:1 molar ratio [31], [32]. The solution was made neutral with the addition of the NH 4 OH and is dried for 10 to 12 hrs.…”

Section: Methodsmentioning

confidence: 99%

Electrical Properties of Cobalt Substituted NZCF and ZNCF Nanoparticles Prepared by the Soft Synthesis Method

et al. 2022

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The soft chemical method was adopted for the synthesis of cobalt substituted nickel-zinc and zinc-nickel ferrites (Ni0.95-xZn0.05CoxFe2O4 and Zn0.95-xNi0.05CoxFe2O4 for x= 0.01, 0.02, 0.03, 0.04, 0.05, and 0.06. We have recently studied the structural, morphological, magnetic properties, initial permeability, and dielectric constant of the samples. They are found with cubic ferromagnetic spinel structure along with the morphology suitable for high-density recording media. The effective initial permeability μi (μeff) is found to depend on magnetocrystalline anisotropy constant K1 and grain size D. From this present study, the dc resistivity is found to increase linearly with Co2+ substitution for both ZNCF and NZCF ferrites up to x=0.04. After that, the material changes its ferromagnetism to paramagnetism thereby increasing the activation energy. The difference between the two magnetic states (Ferro and para) in NZCF is found to be greater than in ZNCF. The phase transition helps to determine the Curie temperature. The ac conductivity takes place by the hopping of charge carriers called polarons. The conductivity is enhanced with frequency.

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“…The co-precipitation method is one of the soft chemical routes which is used for the preparation of the nanoferrites Zn 0.95−x Ni 0.05 Co x Fe 2 O 4 (x=0.1,0.2,0.3,0.4,0.5) with appropriate composition of AR grade aqueous solution in the appropriate ratio of Nickel, Zinc, and Cobalt nitrates against ferric citrate in the equal ratio [11,12,13]. This citrate help to make the particles less soluble and decomposes at a lower temperature less than 873 K [14,15]. Dropwise mixing of ammonium makes the solution neutral and is dried for 10-12 hours after the addition of ethylene glycol.…”

Section: Methodsmentioning

confidence: 99%

Co-Precipitation Synthesis of ZNCF Nanoparticle and their Structure, Morphological, and Magnetic Properties Characterization

Parajuli¹,

Vagolu

Chandramoli

et al. 2022

J. Nep. Phys. Soc.

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The Zinc Nickel Cobalt Ferrite (ZNCF) Zn0.95−xNi0.05CoxFe2O4, for x= 0.01, 0.02, 0.03, 0.04, 0.05 and 0.06 were prepared by co-precipitation. XRD patterns show spinel ferrite with a cubic structure. The lattice parameter was found to increase linearly with cobalt concentration (x). FESEM gave the grain sizes in the range 1.61-1.38nm and particle size in the range 28-21 nm for x = 0.01 to 0.06. The porosity was in the range 92.6-92.9 %. The occupancy of metal ions in the two interstitial sites affects the exchange interaction. The higher grain size and lower porosity have a positive impact on magnetic saturation which makes them applicable in recording media.

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Preparation Conditions of the Ferrites

Cited by 9 publications

References 23 publications

Complex impedance analysis of soft chemical synthesized NZCF systems

Complex impedance analysis of soft chemical synthesized NZCF systems

Electrical Properties of Cobalt Substituted NZCF and ZNCF Nanoparticles Prepared by the Soft Synthesis Method

Co-Precipitation Synthesis of ZNCF Nanoparticle and their Structure, Morphological, and Magnetic Properties Characterization

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