Effect of surfactants on the optical and magnetic properties of cobalt-zinc ferrite Co0.5Zn0.5Fe2O4

Foulani, A.-H. El; Aamouche, A.; Mohseni, Farzin; Amaral, J. S.; Tobaldi, David Maria; Pullar, Robert C.

doi:10.1016/j.jallcom.2018.09.393

Cited by 55 publications

(16 citation statements)

References 49 publications

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“…Crystallite size is an important factor that influences the magnetic and optical properties of a material, especially when the grain size is nearing the crystallite size [6,18]. At 1000 °C , the crystallite size increases with increasing Cu 2+ content, suggesting that the incorporation of Cu 2+ enhances the grain growth in the formation of spinel phase [11].…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

“…The crystallite size (D CS ) calculated using the most intense diffraction peaks (311) for CFO, ZCFO, NCFO, and CCFO), unit cell volume (V), lattice constant (a), physical density (d p ), X-ray density (D XRD ), and porosity (P) for each NC calculated using the equations presented by Dippong et al [18] are shown in Table 1. Crystallite size is an important factor that influences the magnetic and optical properties of a material, especially when the grain size is nearing the crystallite size [6,18]. At 1000 • C, the crystallite size increases with increasing Cu 2+ content, suggesting that the incorporation of Cu 2+ enhances the grain growth in the formation of spinel phase [11].…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

“…When the grain size attains the single domain state, the particles exhibit a superparamagnetic behavior and the surface effects become dominant over magnetization [6]. The H c decreases by CFO doping with Zn 2+ , Ni 2 , or Cu 2+ due to the lower magneto-crystalline anisotropy of these ions when they replace Co 2+ in the octahedral sites [5,10,18].…”

Section: Magnetic Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Influence of Cu2+, Ni2+, and Zn2+ Ions Doping on the Structure, Morphology, and Magnetic Properties of Co-Ferrite Embedded in SiO2 Matrix Obtained by an Innovative Sol-Gel Route

et al. 2020

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This paper presents the synthesis of metal doped Co ferrites, M0.2Co0.8Fe2O4 (M = Cu2+, Ni2+, and Zn2+) embedded in SiO2 matrix by an innovative sol-gel route. The structural and morphological characterization provided information about the crystalline phases, crystallite size, and the shape of the prepared ferrites. The thermal study depicted the thermal decomposition and stability of the obtained ferrites. X-ray diffraction indicated nanocrystalline ferrites with spinel structure and the lack of crystalline phase impurities, while Fourier transform infrared spectroscopy revealed the presence of functional groups in precursors and ferrite powders. The lattice parameters showed a gradual increase indicating a uniform distribution of divalent metal ions in the Co ferrite lattice. The crystallite size, magnetic moment, super-exchange and deflection of magnetic domain were influenced by the dopant metal ion. The room temperature magnetization indicated a ferromagnetic behavior of the ferrites annealed at 1000 °C and a superparamagnetic behavior of the ferrites annealed at 700 °C.

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Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Section: Magnetic Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Cu2+, Ni2+, and Zn2+ Ions Doping on the Structure, Morphology, and Magnetic Properties of Co-Ferrite Embedded in SiO2 Matrix Obtained by an Innovative Sol-Gel Route

et al. 2020

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“…High content of Fe 3+ and Co 2+ magnetic ions at the octahedral (B) sites leads to enhancement of B-B exchange interaction and weakening of A-B interaction. Nanosized magnetic zinc-cobalt ferrites with different Co to Zn ratio were obtained by co-precipitation [24], autocombustion [13] and sol-gel [14] methods. The high M S values make Zn-Co ferrites potential candidate for high-frequency inductors, information technology and communication [25].…”

Section: Applications Of Magnetic Propertiesmentioning

confidence: 99%

“…The dopant amount, valency, size and site preferences define the structural, electrical and magnetic properties of doped Co ferrites [12]. The Co ferrite has an inverse spinel structure, but the doping with divalent metal ions could changes its structure into normal spinel [13]. The change from normal to inverse spinel depends also on the ratio between Co and the dopant ion.…”

Section: Introductionmentioning

confidence: 99%

Progress, Challenges and Opportunities in Divalent Transition Metal-Doped Cobalt Ferrites Nanoparticles Applications

Cadar¹,

Dippong²,

Senila³

et al. 2020

Advanced Functional Materials

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Engineered nanomaterials with tailored properties are highly required in a wide range of industrial fields. Consequently, the researches dedicated to the identification of new applications for existing materials and to the development of novel promising materials and cost effective, eco-friendly synthesis methods gained considerable attention in the last years. Cobalt ferrite is one of the nanomaterials with a wide application range due to its unique properties such as high electrical resistivity, negligible eddy current loss, moderate saturation magnetization, chemical and thermal stability, high Curie temperature and high mechanical hardness. Moreover, its structural, magnetic and electrical properties can be tailored by the selection of preparation route, chemical composition, dopant ions and thermal treatment. This chapter presents the recent applications of nanosized cobalt ferrites doped or co-doped with divalent transition ions such as Zn 2+ , Cu 2+ , Mn 2+ , Ni 2+ , Cd 2+ obtained by various synthesis methods in ceramics, medicine, catalysis, electronics and communications.

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Wet Chemical Synthesis and Processing of Nanoferrites in Terms of Their Shape, Size and Physiochemical Properties

Sarveena

Kumar

Kondal

et al. 2021

Topics in Mining, Metallurgy and Materials Engineering

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Effect of surfactants on the optical and magnetic properties of cobalt-zinc ferrite Co0.5Zn0.5Fe2O4

Cited by 55 publications

References 49 publications

Influence of Cu2+, Ni2+, and Zn2+ Ions Doping on the Structure, Morphology, and Magnetic Properties of Co-Ferrite Embedded in SiO2 Matrix Obtained by an Innovative Sol-Gel Route

Influence of Cu2+, Ni2+, and Zn2+ Ions Doping on the Structure, Morphology, and Magnetic Properties of Co-Ferrite Embedded in SiO2 Matrix Obtained by an Innovative Sol-Gel Route

Progress, Challenges and Opportunities in Divalent Transition Metal-Doped Cobalt Ferrites Nanoparticles Applications

Wet Chemical Synthesis and Processing of Nanoferrites in Terms of Their Shape, Size and Physiochemical Properties

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