Cu 2+ -modified physical properties of Cobalt-Nickel ferrite

Babu, K. Rajasekhar; Rao, K. Ram Mohan; Babu, B. Rajesh

doi:10.1016/j.jmmm.2017.03.044

Cited by 32 publications

(3 citation statements)

References 38 publications

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“…The formation of such peaks evidenced that the spinel ferrite structure was formed in our studied ferrite samples. The variation in the ν 1 and ν 2 peaks was attributed to the difference in bond lengths (Fe–O) associated with the tetrahedral and octahedral sites . From Figure and the attached table, it is found that there is a small variation in peak positions with TiO 2 doping in Ni–Cu–Zn ferrite because of the redistribution or migration of cations between the tetrahedral and octahedral sites in the Ni–Cu–Zn ferrite doped with TiO 2 additive.…”

Section: Resultsmentioning

confidence: 92%

TiO₂-Doped Ni_0.4Cu_0.3Zn_0.3Fe₂O₄ Nanoparticles for Enhanced Structural and Magnetic Properties

Patil¹,

Pawar

Patange³

et al. 2021

ACS Omega

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TiO2 (0–10 wt %)-doped nanocrystalline Ni0.4Cu0.3Zn0.3Fe2O4 (Ni–Cu–Zn) ferrites were synthesized using the sol–gel route of synthesis. The cubic spinel structure of the ferrites having the Fd3m space group was revealed from the analysis of Rietveld refined X-ray diffraction (XRD) data. The secondary phase of TiO2 with a space group of I41/amd was observed within the ferrites with doping, x > 3 wt %. The values of lattice parameter were enhanced with the addition of TiO2 up to 5 wt % and reduced further for the highest experimental doping of 10 wt %. Field emission scanning electron microscopy (FESEM) images exhibit the spherical shape of the synthesized particles with some agglomeration, while the compositional purity of prepared ferrite samples was confirmed by energy-dispersive X-ray spectroscopy (EDX) and elemental mapping. The cubic spinel structure of the prepared ferrite sample was confirmed by the Raman and Fourier transform infrared (FTIR) spectra. UV–visible diffuse reflectance spectroscopy was utilized to study the optical properties of the ferrites. The value of band gap energy for the pristine sample was less than those of the doped samples, and there was a decrement in band gap energy values with an increase in TiO2 doping, which specifies the semiconducting nature of prepared ferrite samples. A magnetic study performed by means of a vibrating sample magnetometer (VSM) demonstrates that the values of saturation magnetization of the ferrites decrease with the addition of TiO2 content, and all investigated ferrites show the characteristics of soft magnetic materials at room temperature. The Mössbauer study confirms the decrease in the magnetic behavior of the doped ferrites due to the nonmagnetic secondary phase of TiO2.

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Section: Resultsmentioning

confidence: 92%

TiO₂-Doped Ni_0.4Cu_0.3Zn_0.3Fe₂O₄ Nanoparticles for Enhanced Structural and Magnetic Properties

Patil¹,

Pawar

Patange³

et al. 2021

ACS Omega

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“…Hence, the selection of a suitable synthesis approach is pivotal in ensuring the production of high-quality ferrite nanoparticles [24]. A plethora of techniques, such as chemical co-precipitation, sol-gel, ball milling, citrate precursor, www.iiste.org ISSN 2224-7467 (Paper) ISSN 2225-0913 (Online) Vol.66, 2024 mechanochemical, glycine nitrate, adjusted oxidation, hydrothermal, and solid-state methods, have been documented in literature for fabricating nickel copper mixed ferrite nanoparticles [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

The Analysis of Cu1-xNixFe2O4 Nanoferrites' Structural, Morphological, Optical, and Magnetic Characteristics

2024

CPER

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The research centered on utilizing the co-precipitation method to explore the consequences of Ni2+ substitution within Cu1-xNixFe2O4 (0 ≤ x ≤ 1) nanoferrites. This encompassed an examination of their physical and chemical attributes spanning structure, form, optics, and magnetism. Laboratory specimens indicated the exclusive development of spinel crystalline structure through XRD analysis, albeit with minor impurities. Outcomes demonstrated that Ni2+ substitution in Cu1-xNixFe2O4 prompted a reduction in particle dimensions from 20 to 11 nm, while the unchanging lattice measure exhibited a gradual reduction from 8.362 to 8.345 8 Å with amplified Ni2+ ion concentrations. Particle dimensions evaluated by TEM micrographs were akin to those from XRD-tested lab-created samples. Furthermore, FTIR spectra enabled the identification of predominant metal-oxygen bonds within Cu1-xNixFe2O4, unveiling an augmentation in the band gap of nanoferrites from 3.32 to 3.62 eV, attributed to heightened Ni2+ ion content. Conversely, the magnetic attributes of nanoferrites at room temperature were probed using a superconductive quantum interferometer (SQUID) arrangement, exposing an augmentation in copper ferrite's magnetic properties aligned with intensified Ni2+ ion prevalence.

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“…In favor of samples calcined at 700 °C, the saturation magnetization declines, and the decline pattern of the saturation magnetization could be a result of the diverse cation distribution [11].The exchange of the different cations in the spinel matrix is responsible for the fascinating magnetic performance of the different ferrites [12]. These magnetic cations were exchanged between the voids in various experimental methods, and also an exchange of cations depends on doping materials, annealing temperature and duration of time [13]. Magnetic cobalt ferrites have been synthesized by a variety of methods, such as mechanical milling, co-precipitation, hydrothermal methods and sol-gel techniques.…”

Section: Introductionmentioning

confidence: 99%

Tuning of ferrites (CoxFe3-xO4) nanoparticles by co-precipitation technique

Sagayaraj¹,

Aravazhi

kumar

et al. 2019

SN Appl. Sci.

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The synthesis of cobalt ferrites (Co x Fe 3-x O 4 ) materials with sympathetic size and tunable magnetic properties is used for the promising industrial and biomedical applications. Such cobalt ferrites nanoparticles have been employed by co-precipitation technique. XRD analysis revealed that the average crystallite size of synthesized powder is 9 nm using (311) peaks, and it has exhibited polycrystalline structure. FTIR spectroscopy showed the formation of ferrite phase with high-and low-frequency bands at 573 cm −1 and 455 cm −1 , respectively. The TEM images exposed that the materials have been well agglomerated along with spherical-shaped nanoparticles. EDX study confirmed the presence Co, O, Fe and C with stoichiometric composition and no more impurity detected in the spectrum. The VSM analysis revealed that the sample exhibits the hard magnetic materials. In addition, the magnetic anisotropy increases (19.05 → 344.84 erg/g) when Co is added with Fe 3 O 4 . EPR spectroscopy confirmed the ferromagnetic behavior of composites.

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Cu 2+ -modified physical properties of Cobalt-Nickel ferrite

Cited by 32 publications

References 38 publications

TiO₂-Doped Ni_0.4Cu_0.3Zn_0.3Fe₂O₄ Nanoparticles for Enhanced Structural and Magnetic Properties

TiO₂-Doped Ni_0.4Cu_0.3Zn_0.3Fe₂O₄ Nanoparticles for Enhanced Structural and Magnetic Properties

The Analysis of Cu1-xNixFe2O4 Nanoferrites' Structural, Morphological, Optical, and Magnetic Characteristics

Tuning of ferrites (CoxFe3-xO4) nanoparticles by co-precipitation technique

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Cu 2+ -modified physical properties of Cobalt-Nickel ferrite

Cited by 32 publications

References 38 publications

TiO2-Doped Ni0.4Cu0.3Zn0.3Fe2O4 Nanoparticles for Enhanced Structural and Magnetic Properties

TiO2-Doped Ni0.4Cu0.3Zn0.3Fe2O4 Nanoparticles for Enhanced Structural and Magnetic Properties

The Analysis of Cu1-xNixFe2O4 Nanoferrites' Structural, Morphological, Optical, and Magnetic Characteristics

Tuning of ferrites (CoxFe3-xO4) nanoparticles by co-precipitation technique

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TiO₂-Doped Ni_0.4Cu_0.3Zn_0.3Fe₂O₄ Nanoparticles for Enhanced Structural and Magnetic Properties

TiO₂-Doped Ni_0.4Cu_0.3Zn_0.3Fe₂O₄ Nanoparticles for Enhanced Structural and Magnetic Properties