Influence of Y and La substitution on particle size, structural and magnetic properties of nanosized nickel ferrite prepared by using citrate precursor method

Anh, Luong Ngoc; Loan, To Thanh; Duong, Nguyen Phuc; Soontaranon, Siriwat; Nga, Trần Thị Việt; Hien, Than Duc

doi:10.1016/j.jallcom.2015.04.240

Cited by 28 publications

(5 citation statements)

References 37 publications

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“…The difference in band position was caused by difference in M-O distance in tetrahedral and octahedral sites. The range of absorption band obtained is in good agreement with those reported in literatures [15,47,48]. The absence of extra peaks indicates that the prepared samples were free from anionic impurities and any organic residue.…”

Section: Resultssupporting

confidence: 90%

Cu2+ and Al3+ co-substituted cobalt ferrite: structural analysis, morphology and magnetic properties

et al. 2016

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Cu-Al substituted Co ferrite nanopowders, Co 1−x Cu x Fe 2−x Al x O 4 (0.0 ≤ x ≤ 0.8) were synthesized by the co-precipitation method. The effect of Cu-Al substitution on the structural and magnetic properties have been investigated. X-ray diffraction (XRD) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM) and vibrating sample magnetometer (VSM) are used for studying the effect of variation in the Cu-Al substitution and its impact on particle size, magnetic properties such as M s and H c. Cu-Al substitution occurs and produce a secondary phase, α-Fe 2 O 3. The crystallite size of the powder calcined at 800 • C was in the range of 19-26 nm. The lattice parameter decreases with increasing Cu-Al content. The nanostructural features were examined by FESEM images. Infrared absorption (IR) spectra shows two vibrational bands; at around 600 (v 1) and 400 cm −1 (v 2). They are attributed to the tetrahedral and octahedral group complexes of the spinel lattice, respectively. It was found that the physical and magnetic properties have changed with Cu-Al contents. The saturation magnetization decreases with the increase in Cu-Al substitution. The reduction of coercive force, saturation magnetization and magnetic moments are may be due to dilution of the magnetic interaction.

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Section: Resultssupporting

confidence: 90%

Cu2+ and Al3+ co-substituted cobalt ferrite: structural analysis, morphology and magnetic properties

et al. 2016

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“…The shift of T C in their study is well described by the finite ‐ size scaling formula. The reported studies on nanosized magnetic materials pointed out that the finite‐size effect influences significantly on the ordering temperature when particle diameter decreases down to roughly 10 nm . Nevertheless, most of the particles of the MgFe 2 O 4 samples in this work are larger than 10 nm.…”

Section: Resultsmentioning

confidence: 63%

Cation Distribution Assisted Tuning of Magnetization in Nanosized Magnesium Ferrite

Thanh

Loan

Duong

et al. 2017

Physica Status Solidi (a)

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The MgFe 2 O 4 nanoparticles are synthesized by combustion method and annealed at different temperatures from 500 to 1000 C. Magnetic properties, morphology, valence states of iron, crystal structure, and microstructure of the samples are investigated systematically by vibrating sample magnetometer, field emission scanning electron microscope, transmission electron microscopy, X-ray absorption spectroscopy, and synchrotron X-ray diffraction. Cation distribution is determined from synchrotron X-ray diffraction data using Rietveld refinement combined with extended X-ray absorption fine structure spectroscopy. The results indicates that all the samples are phasepure with crystallite size ranging from 11 to 41 nm. By adjusting the annealing temperature, cation distribution and particle size can be changed, and consequently leading to the change in structure and magnetic properties. The saturation magnetization of the samples are enhanced significantly compared to that of the bulk material. The variation of magnetic properties is discussed based on cation distribution, particle size, valence state, surface effect, and spin canting.

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“…[15][16][17][18] It is known that the structural and magnetic properties of spinel ferrites are affected by magnetic interactions and cation distribution in the tetrahedral and octahedral sites. 19 Hence, by changing the Ni/Cu concentration ratio, the exchange interactions and cation distribution are varied, leading to the change in the magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Cation distribution in CuFe2O4 nanoparticles: Effects of Ni doping on magnetic properties

Thanh

Loan

Anh

et al. 2016

Journal of Applied Physics

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The Cu1−xNixFe2O4 nanoparticles (with x = 0, 0.3, 0.5, 0.7, and 1) were synthesized by using spray co-precipitation method at annealing temperature Ta = 900 °C in air for 5 h. The crystal structure, microstructure, oxidation state, and magnetic properties of the samples were characterized by using X-ray diffraction, synchrotron X-ray diffraction, scanning electron microscopy, X-ray absorption spectroscopy, and vibrating sample magnetometer. It was shown that all the samples have cubic structure. Lattice constant and grain size decrease, while the Curie temperature TC increases with increasing of Ni2+ content. A small amount of Fe2+ was found in all the samples. Cation distribution was determined by using a combination of magnetization measurements, extended X-ray absorption fine structure analysis, and Rietveld refinement from synchrotron X-ray diffraction data. It was indicated that Ni2+ ions occupy in octahedral site only, while Cu2+ ions distribute in both tetrahedral and octahedral sites. The variation of magnetic parameters is discussed based on Ni2+ concentration, grain size, the cation distribution, surface effect, and the presence of Fe2+ ion in the samples.

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Influence of Y and La substitution on particle size, structural and magnetic properties of nanosized nickel ferrite prepared by using citrate precursor method

Cited by 28 publications

References 37 publications

Cu2+ and Al3+ co-substituted cobalt ferrite: structural analysis, morphology and magnetic properties

Cu2+ and Al3+ co-substituted cobalt ferrite: structural analysis, morphology and magnetic properties

Cation Distribution Assisted Tuning of Magnetization in Nanosized Magnesium Ferrite

Cation distribution in CuFe2O4 nanoparticles: Effects of Ni doping on magnetic properties

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