Influence of samarium doping on structural, elastic, magnetic, dielectric, and electrical properties of nanocrystalline cobalt ferrite

Hashim, Mohd.; Boda, Nehru; Ahmed, Ateeq; Sharma, Saurabh Kumar; Ravinder, D.; Sumalatha, Edapalli; Ul‐Hamid, Anwar; Ismail, Mukhlis M.; Chaman, Mohd; Shirsath, Sagar E.; Kumar, Ravi; Kumar, Shalendra; Meena, Sher Singh; Nasir, Mohammad

doi:10.1007/s00339-021-04686-4

Cited by 42 publications

(7 citation statements)

References 62 publications

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“…where D is the average crystallite size, λ is the incident radiation, β d is the corrected broadening, θ is the Bragg angle and it has been calculated as 13 nm for CF sample and 5 nm, respectively, for TCF sample. Comparing with the literature data, it is observed that these sizes are smaller than those of cobalt ferrite obtained through chemical or other green synthesis methods [3,23,24,33].…”

Section: Characterization Of the Cobalt Ferrite Samplesmentioning

confidence: 48%

“…Several factors such as particle size, shape and porosity that are closely related to the synthesis method, have significant impact on the cobalt ferrite properties [12]. Among the chemical methods, special attention is given to coprecipitation and Pechini methods [13,14], sol-gel process [15,16], hydrothermal/solvothermal technique [1,[17][18][19], precursor method [20], combustion method and microwave-assisted combustion method [21][22][23][24], microemulsion method [7] and polyol process [25]. Das et al [17] reported a significant modification in the size of the particles and magnetic properties when adding the CTAB surfactant in the synthesis of CoFe 2 O 4 nanoparticles through the hydrothermal method.…”

Section: Introductionmentioning

confidence: 99%

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Structural, morphological and magnetic investigations on cobalt ferrite nanoparticles obtained through green synthesis routes

et al. 2021

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This paper describes for the first time two processing routes-the precursor method and the two-step wet chemical process-for the synthesis of magnetic cobalt ferrite using the Tamarindus indica fruit extract. These green approaches are eco-friendly, safe and efficient alternatives to classical chemical methods. The aqueous extract from tamarind fruit contains numerous metabolites (organic acids, aminoacids). All these bioactive components are able to chelate metal ions leading to the formation of the multimetallic complex (precursor of cobalt ferrite). The obtained precursor was characterized by Fourier transform infrared spectroscopy (FTIR), thermal analysis, X-ray diffraction analysis (XRD) and magnetic measurements. The structure, morphology and magnetic behavior of the cobalt ferrite samples prepared through both synthesis routes were investigated by various characterization techniques: FTIR, XRD, scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS), Mössbauer spectroscopy and magnetic measurements. XRD data confirmed that a cubic spinel structure was obtained for both ferrite powders with average crystallite size of 13 and 5 nm, respectively. The microstructure study by SEM revealed the formation of nanocrystallites assemblies using the precursor method and carbon-rich particles forming granulated micron-sized agglomerates, embedding ferrite nanocrystallites obtained through the two-step wet chemical process. Mössbauer spectroscopy results evidenced relaxation processes in the CoFe 2 O 4 samples at room temperature, and the main characteristics of the involved sublattices were derived. The magnetic investigation revealed a typical magnetic behavior for a spinel, with CoFe 2 O 4 nanoparticles ferrimagnetic at low temperature and superparamagnetic at room temperature.

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Section: Characterization Of the Cobalt Ferrite Samplesmentioning

confidence: 48%

Section: Introductionmentioning

confidence: 99%

Structural, morphological and magnetic investigations on cobalt ferrite nanoparticles obtained through green synthesis routes

et al. 2021

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“…For the electrochemical detection of PAR, modified glassy carbon electrode (LNT-CFO/GCE) including cobalt ferrite was designed. Amiri et al, [99] reported excellent biomedical applications of cobalt ferrite nanoparticles. The authors reported that Cobalt ferrite nanoparticles with high magnetic anisotropy used for hyperthermia applications, give controlled and effective heat generation.…”

Section: Cobalt Ferrite Biomedicine Applicationsmentioning

confidence: 99%

A Review on Synthesis, Properties and Applications on Cobalt Ferrite

Kashid¹,

Suresh²,

Mathad³

et al. 2022

IJASE

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Cobalt ferrite has attracted much attention owing to its excellent properties and huge technological applications. The novel synthesis methods such as co-precipitation method, solid state method, sol-gel method, auto combustion method, precursor technique, hydrothermal technique, spray pyrolysis technique etc. have been used for its preparation. Along with numerous outstanding properties of cobalt ferrite several chemical modifications like modifying reaction conditions, substituting one or more ions with other metal ions enhanced the configuration of grains of cobalt ferrite. With all the factors the role of dopant in chemical composition is extreme important because it modifies the structural, electrical, magnetic and catalytic properties of cobalt ferrite. In this review, we summarize the synthesis and properties of cobalt ferrites with significant developments. The applications of cobalt ferrite in several fields are also highlighted in this review.

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“…For example, Vinosha et al investigated the recent improvements of cobalt ferrite nanoparticles when they are doped by Zinc dopant through different synthesis processes [6]. Increment of coercive field was another result reported by Hashim et al after substitution of samarium cations for iron ions in the cobalt ferrite lattices [7]. Rare-earth elements have been reported to be recent additions providing spinel ferrites with promising modifications [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effect of praseodymium in cation distribution, and temperature-dependent magnetic response of cobalt spinel ferrite nanoparticles

Nikmanesh¹,

Jaberolansar²,

Kameli³

et al. 2022

Nanotechnology

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This work reports cation distribution, magnetic, structural, and morphological studies of rare-earth Pr doped cobalt ferrite nanoparticles CoFe2−xPrxO4 (x=0, 0.02, 0.04, 0.06 at. %) fabricated by sol-gel auto-combustion method. X-ray diffraction analysis, Field Emission Scanning Electron Microscopy (FESEM), High Resolution Transmission Electron Microscopy (HRTEM), Selected Area Electron Diffraction (SAED), and Fourier-Transform Infrared (FTIR) microscopy were utilized to study the structural and morphological characteristics of the prepared samples. Rietveld refinement by the Material Analyses Using Diffraction (MAUD) software showed the formation of mono-phase cubic spinel structure with Fd-3m space group; however, there was a trace of impure PrFeO3 phase for the sample CoFe1.96Pr0.04O4 (x=0.06). Cation distribution was inferred from the XRD patterns using MAUD program. FESEM analysis revealed the spherical-shaped particles with dimensions close to the data extracted from XRD analysis and HRTEM images confirmed it. FTIR measurements revealed the presence of two prominent stretching vibrational modes confirming the successful formation of ferrite spinel structure. Magnetic properties of the nanoparticles were measured at two different temperatures 300 K and 10 K. For the low temperature of 10 K a high sensitive measurement method as Superconducting Quantum Interference Device (SQUID) magnetometry was used and Vibrating Sample Magnetometer (VSM) recorded the magnetic data at 300 K. Comparison of the magnetic results exhibited a significant enhancement with temperature drop due to the reduction in thermal fluctuations. Paramagnetic nature of rare-earth ions may be the main reason for MS decrement from 76 emu/g (x=0.0) to 60 emu/g (x=0.02) at 300 K. At 10 K, the estimated cation distribution played a vital role in justification of obtained magnetic results. All the obtained data showed that the synthesized magnetic nanoparticles can be implemented in permanent magnet industry and information storage fields, especially when it comes to lower temperatures.

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Influence of samarium doping on structural, elastic, magnetic, dielectric, and electrical properties of nanocrystalline cobalt ferrite

Cited by 42 publications

References 62 publications

Structural, morphological and magnetic investigations on cobalt ferrite nanoparticles obtained through green synthesis routes

Structural, morphological and magnetic investigations on cobalt ferrite nanoparticles obtained through green synthesis routes

A Review on Synthesis, Properties and Applications on Cobalt Ferrite

Effect of praseodymium in cation distribution, and temperature-dependent magnetic response of cobalt spinel ferrite nanoparticles

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