Influence of annealing temperature on structural, magnetic, and dielectric properties of NiFe2O4 nanorods synthesized by simple hydrothermal method

Hoghoghifard, Sedigheh; Moradi, Mahmood

doi:10.1016/j.ceramint.2022.03.047

Cited by 23 publications

(3 citation statements)

References 47 publications

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“…The magnetic properties of nanocrystalline NiFe2O4 are different from bulk nickel ferrite and depend on the size, shape, and purity of nanoparticles, there for these nanoparticles are interested in many industrial and scientific applications [7][8][9]. There are various methods for synthesizing NiFe2O4 nanocrystalline such as sol-gel, microemulsion, microwave, sonochemical, and hydrothermal [10][11][12][13][14]. between these methods, the hydrothermal process is very interesting because of its cost-effectiveness and control of the morphologies and sizes of particles by control of hydrothermal parameters like time temperature, and concentration of materials [15].…”

Section: Introductionmentioning

confidence: 99%

Green synthesis and characterization of NiFe2O4 nanostructure via hydrothermal method

Hosseinabad

Nabiyouni

Hedayati

2023

CNJ

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In this paper, nickel ferrite nanostructures were fabricated via a simple and green hydrothermal method using lemon juice. For the synthesis of NiFe2O4 nanoparticles, the materials were placed in the autoclave reactor for 2 and 12 hours. The morphology of particles was studied by scanning electron microscope (SEM). Although the NiFe2O4 nanoparticles after 2 h heating are agglomerated increasing the heating time to 12 h leads to the formation of sphere shape nanosize particles. The crystal structure of nickel ferrite nanoparticles was investigated via an X-ray diffraction pattern and the crystallite size of particles was calculated using the Debye-Scherrer formula. The magnetic hysteresis loop of the synthesized ferrite was studied by a vibration sample magnetometer (VSM). The magnetic parameters of remanence Mr, saturation magnetization Ms, and coercivity Hc, increase as the synthesis time increases. The optical properties of NiFe2O4 were investigated by ultraviolet-visible (UV-vis) spectra. The results show that the particle band gaps decrease with increasing the synthesis time.

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Section: Introductionmentioning

confidence: 99%

Green synthesis and characterization of NiFe2O4 nanostructure via hydrothermal method

Hosseinabad

Nabiyouni

Hedayati

2023

CNJ

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“…NiFe 2 O 4 may display paramagnetic, superparamagnetic or ferrimagnetic behavior depending on the particle size and shape [ 20 ]. Due to its high magnetocrystalline anisotropy, high-saturation magnetization and unique magnetic structure combined with high Curie temperature, low coercivity, low eddy current loss, low price and high electrochemical stability [ 12 , 20 , 21 , 22 ] it is one of the most suitable candidates for applications in biosensors, corrosion protection, drug delivery, ceramics, medical diagnostics, microwave absorbers, transformer cores, magnetic liquids, magnetic refrigeration and high-density magnetic recording media, water-oxidation processes, dye removal by magnetic separation, etc. [ 5 , 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Structural, Morphological and Magnetic Properties of MFe2O4 (M = Co, Ni, Zn, Cu, Mn) Obtained by Thermal Decomposition

Dippong

Levei

Cadar

2022

IJMS

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The structural, morphological and magnetic properties of MFe2O4 (M = Co, Ni, Zn, Cu, Mn) type ferrites produced by thermal decomposition at 700 and 1000 °C were studied. The thermal analysis revealed that the ferrites are formed at up to 350 °C. After heat treatment at 1000 °C, single-phase ferrite nanoparticles were attained, while after heat treatment at 700 °C, the CoFe2O4 was accompanied by Co3O4 and the MnFe2O4 by α-Fe2O3. The particle size of the spherical shape in the nanoscale region was confirmed by transmission electron microscopy. The specific surface area below 0.5 m2/g suggested a non–porous structure with particle agglomeration that limits nitrogen absorption. By heat treatment at 1000 °C, superparamagnetic CoFe2O4 nanoparticles and paramagnetic NiFe2O4, MnFe2O4, CuFe2O4 and ZnFe2O4 nanoparticles were obtained.

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“…Consequently, less amount of Fe 3+ / Fe 2+ ions pair available for hoping mechanism. Due these dielectric constant decreases with lanthanum doping[1,9].…”

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confidence: 97%

Electrical Properties of Lanthanum Doped Cobalt Ferrite Nanoparticales

Kamran

Abbas

Akhtar

et al. 2022

Advances in Science and Technology

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Ferrites materials with Spinel structure have been broadly studied in recent years because of numerous technological applications. Lanthanum substituted Co-ferrites nanoparticles (CoLa0.075Fe1.925O4) were synthesized via chemical co-precipitation method. X-ray Diffraction study revealed that prepared nanoparticales are single-phased spinel ferrites. Lattice constant, crystallite size, theoretical densities were estimated from XRD data. Electrical properties have been investigated with frequency ranging from 20Hz to 3MHz at room temperature. Dielectric constant and dielectric loss factor shows decreasing trend with increasing frequency. Ac conductivity exhibit increasing behavior with increasing frequency. The contribution of grains and intergrain boundaries in conduction process was estimated from impedance study. Nyquist plot shows dominant contribution of grain boundary resistance than the grain resistance in conduction mechanism.

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Influence of annealing temperature on structural, magnetic, and dielectric properties of NiFe2O4 nanorods synthesized by simple hydrothermal method

Cited by 23 publications

References 47 publications

Green synthesis and characterization of NiFe2O4 nanostructure via hydrothermal method

Green synthesis and characterization of NiFe2O4 nanostructure via hydrothermal method

Investigation of Structural, Morphological and Magnetic Properties of MFe2O4 (M = Co, Ni, Zn, Cu, Mn) Obtained by Thermal Decomposition

Electrical Properties of Lanthanum Doped Cobalt Ferrite Nanoparticales

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