Tuning in structural, optoelectronic, magnetic and ferroelectric properties of NiFe2O4 ceramics engineering nanomaterials by substitution of rare earth element, Pr3+ prepared by sol–gel method

Kumar, Nishant; Archana, .; Singh, Rakesh Kumar; Kumar, Vivek; Das, Shashank Bhushan

doi:10.1007/s10854-022-07790-0

Cited by 14 publications

(4 citation statements)

References 48 publications

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“…Elemental mapping images from a larger area ( Figure S3 ) show that Ni, Fe, and O are homogeneously dispersed in these areas. An HR-TEM image of NFO NPs ( Figure 2 c) shows the crystalline structure of several individual particles, from which we were able to identify the crystal lattice spacing of 0.25 nm that corresponds to the (311) crystal plane of NFO [ 23 ].…”

Section: Resultsmentioning

confidence: 99%

Laser Ablation of NiFe2O4 and CoFe2O4 Nanoparticles

et al. 2022

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Pulsed laser ablation in liquids was utilized to prepare NiFe2O4 (NFO) and CoFe2O4 (CFO) nanoparticles from ceramic targets. The morphology, crystallinity, composition, and particle size distribution of the colloids were investigated. We were able to identify decomposition products formed during the laser ablation process in water. Attempts to fractionate the nanoparticles using the high-gradient magnetic separation method were performed. The nanoparticles with crystallite sizes in the range of 5–100 nm possess superparamagnetic behavior and approximately 20 Am2/kg magnetization at room temperature. Their ability to absorb light in the visible range makes them potential candidates for catalysis applications in chemical reactions and in biomedicine.

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Section: Resultsmentioning

confidence: 99%

Laser Ablation of NiFe2O4 and CoFe2O4 Nanoparticles

et al. 2022

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“…The interplanar distance (d‐spacing) of the CFO–BT CSMENP was evaluated by applying Bragg's law given in Equation (). [ 63 ] The relative calculation of d‐spacing, lattice constant (a), and the cell volume (V) was expressed by Equation (– ), respectively [ 64 ]

n \lambda = 2 d \text{sin} \theta

wherein λ = wavelength, θ = diffraction angle, and d = inter planar distance. [ 65 ]

a = d \sqrt{h^{2} + k^{2} + l^{2}}

…”

Section: Methodsmentioning

confidence: 99%

“…The interplanar distance (d-spacing) of the CFO-BT CSMENP was evaluated by applying Bragg's law given in Equation ( 1). [63] The relative calculation of d-spacing, lattice constant (a), and the cell volume (V) was expressed by Equation (1-3), respectively [64] nλ ¼ 2dsinθ…”

Section: X-ray Diffraction Characterization Of Csmenpmentioning

confidence: 99%

Magnetoelectric Core–Shell Nanoparticle–Based Wearable Hybrid Energy Harvesters for Biomedical Applications

Murali,

Mukherjee,

Das

et al. 2023

Adv Eng Mater

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In this work, a novel barium titanate–coated cobalt ferrite core–shell magnetoelectric nanoparticle and poly(3,4‐ethylenedioxythiophene): polystyrene sulfonate–based wearable energy‐harvesting patch for wireless power‐transfer applications are proposed. The developed flexible patch has unique ease of fabrication and high‐efficiency energy conversion capability from the magnetic field and mechanical motion to the electric field as compared to bulk or thin‐film‐based devices. This unique power‐transfer capability of this device is achieved due to the crystalline nature of fabricated nanoparticles, which is confirmed using X‐ray diffraction and high‐resolution transmission electron microscopy. This wearable patch can generate a high voltage of 560 mV when exposed to a 40 μT alternating magnetic field at the resonance frequency of 48.6 kHz. The hybrid mode of electric power generation is achieved by coupling bodily motion with the remotely applied alternating magnetic field (40 μT), which results in the generation of a higher electric potential of 860 mV and maximum power density of 0.458 mW cm−3 across a 10 kΩ load. The maximum magnetoelectric coefficient is recorded as 1300 mV cm−1 Oe−1. The flexible nature and hybrid operation of the proposed device make it an efficient alternative for powering a wide range of wearable medical electronic devices.

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“…Nanomaterials are defined as at least one dimension in the three-dimensional space within the range of 1-100 nm and have been extensively researched due to their excellent properties such as quantum size effect, small size effect, surface effect, and macroscopic quantum tunneling effect [1][2][3]. As a special kind of nanomaterials, magnetic nanomaterials have been widely studied by scientists because they not only have the properties of nanomaterials but also have excellent magnetic properties, which have been widely applied in many fields, such as environment [4][5][6][7], biomedicine [8][9][10], and ceramics [11], especially in the biomedical field, such as tumor therapy [12,13], magnetothermal therapy [14], sensor [15], magnetic resonance imaging [16], drug delivery [17], etc. Under the external magnetic field, magnetic nanomaterials could be controlled to deliver the drug target to the designated location when they are injected into the blood through veins, which could improve drug utilization [18].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of magnetic α-Fe₂O₃/Fe₃O₄ heterostructure nanorods via the urea hydrolysis-calcination process and their biocompatibility with LO₂ and HepG₂ cells

Zhu,

Ouyang,

Ling

et al. 2023

Nanotechnology

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β-FeOOH nanorods were prepared via the urea hydrolysis process with the average length of 289.1 nm and average diameter of 61.2 nm, while magnetic α-Fe2O3/Fe3O4 heterostructure nanorods were prepared via the urea calcination process with β-FeOOH nanorods as precursor, and the optimum conditions were the calcination temperature of 400 °C, the calcination time of 2 h, the β-FeOOH/urea mass ratio of 1:6. The average length, diameter, and the saturation magnetization of the heterostructure nanorods prepared under the optimum conditions were 328.8 nm, 63.4 nm and 42 emu·g−1, respectively. The Prussian blue test demonstrated that the heterostructure nanorods could be taken up by HepG2 cells, and cytotoxicity tests proved that the heterostructure nanorods had no significant effect on the viabilities of LO2 and HepG2 cells within 72 h in the range of 100–1600 μg·ml−1. Therefore, magnetic α-Fe2O3/Fe3O4 heterostructure nanorods had better biocompatibility with LO2 and HepG2 cells.

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Tuning in structural, optoelectronic, magnetic and ferroelectric properties of NiFe2O4 ceramics engineering nanomaterials by substitution of rare earth element, Pr3+ prepared by sol–gel method

Cited by 14 publications

References 48 publications

Laser Ablation of NiFe2O4 and CoFe2O4 Nanoparticles

Laser Ablation of NiFe2O4 and CoFe2O4 Nanoparticles

Magnetoelectric Core–Shell Nanoparticle–Based Wearable Hybrid Energy Harvesters for Biomedical Applications

Fabrication of magnetic α-Fe₂O₃/Fe₃O₄ heterostructure nanorods via the urea hydrolysis-calcination process and their biocompatibility with LO₂ and HepG₂ cells

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Tuning in structural, optoelectronic, magnetic and ferroelectric properties of NiFe2O4 ceramics engineering nanomaterials by substitution of rare earth element, Pr3+ prepared by sol–gel method

Cited by 14 publications

References 48 publications

Laser Ablation of NiFe2O4 and CoFe2O4 Nanoparticles

Laser Ablation of NiFe2O4 and CoFe2O4 Nanoparticles

Magnetoelectric Core–Shell Nanoparticle–Based Wearable Hybrid Energy Harvesters for Biomedical Applications

Fabrication of magnetic α-Fe2O3/Fe3O4 heterostructure nanorods via the urea hydrolysis-calcination process and their biocompatibility with LO2 and HepG2 cells

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Product

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Fabrication of magnetic α-Fe₂O₃/Fe₃O₄ heterostructure nanorods via the urea hydrolysis-calcination process and their biocompatibility with LO₂ and HepG₂ cells