XRD and IR analysis of nanocrystalline Ni–Zn ferrite synthesized by the sol–gel method

Raghavender, A. T.; Biliškov, Nikola; Skoko, Željko

doi:10.1016/j.matlet.2010.11.071

Cited by 98 publications

(33 citation statements)

References 7 publications

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“…Decrease in the crystallite size and lattice constant may be due to the substitution of smaller Ni 2+ ions (0.74 Ǻ) in place of larger Zn 2+ ions (0.84 Ǻ) [15][16][17][18].…”

Section: T= Cosmentioning

confidence: 99%

Dielectric Response of Nix Zn1-x Al Fe O4 Nanoferrites

Donta¹,

Katrapally²,

Pendyala³

2016

NanoWorld J

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Ni-Zn-Al nanoferrites of general formula Ni x Zn 1-x Al Fe O 4 (x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) were synthesized by sol-gel auto combustion technique. The X-ray diffraction and FTIR studies confirmed the formation of single cubic spinel structure. Dielectric performance and AC conductivity of prepared mixed nanoferrites were carried out using LCR impedance meter. It was observed that both dielectric constant and dielectric loss were decreased by increasing the frequency whereas AC conductivity increases with applied frequency but decreases with increasing the Ni 2+ ion substitution for a fixed Al 3+ ion concentration. DC resistivity, activation energy and Curie temperature were calculated by using the two probe experimental method. It was observed that DC resistivity decreased whereas the charge mobility increased with increasing the temperature. DC resistivity and activation energy of the nanoferrite samples were increased with Ni 2+ ion substitution for a fixed Al 3+ ion concentration.

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“…Decrease in the crystallite size and lattice constant may be due to the substitution of smaller Ni 2+ ions (0.74 Ǻ) in place of larger Zn 2+ ions (0.84 Ǻ) [15][16][17][18].…”

Section: T= Cosmentioning

confidence: 99%

Dielectric Response of Nix Zn1-x Al Fe O4 Nanoferrites

Donta¹,

Katrapally²,

Pendyala³

2016

NanoWorld J

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“…The octahedral and tetrahedral holes, which are vacant, may accommodate the analyte spices and may act as good sensor. Cobalt ferrite (CoFe 2 O 4 ) [1], copper ferrite (CuFe 2 O 4 ) [2] and nickel ferrite (NiFe 2 O 4 ) [3] are inverse spinels in which the tetrahedral (A) sites are occupied by ferric ions, and the octahedral (B) sites by ferric and the particular metal ions as in ðFe 3þ Þ A ½M 2þ Fe 3þ � B O 2� 4 . ZnFe 2 O 4 has a normal spinel structure with Zn 2þ in tetrahedral sites and Fe 3þ occupying octahedral sites.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of metal ferrite (MFe₂O₄, M = Co, Cu, Mg, Ni, Zn) nanoparticles as humidity sensor materials

Jeseentharani¹,

George²,

Jeyaraj³

et al. 2013

Journal of Experimental Nanoscience

142

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Humidity sensitivity of metal ferrite nanoparticles [MFe 2 O 4 , M (II) ¼ Co, Cu, Mg, Ni and Zn] prepared by solid-state reaction of inorganic precursors was studied. The process was convenient, environmentally-friendly, inexpensive and efficient. The spinel structure of the compounds prepared by this method was confirmed by XRD and FT-IR studies. The surface morphology was observed by scanning electron microscopy, and the surface area was analysed by the nitrogen adsorption/desorption study by the Brunauer-Emmett-Teller (BET) method. All the samples were subjected to dc electrical conductivity studies at room temperature. The resistance measurements as a function of relative humidity in the range of 5-98% and the sensitivity factor (S f ¼ R 5% / R 98% ) were calculated. Among all the metal ferrites, zinc ferrite (ZnFe 2 O 4 ) possessed the highest humidity sensitivity factor of 2895 � 85, whereas the other compounds possessed a very low sensitivity factor. The response and recovery times of ZnFe 2 O 4 were 330 and 80 s.

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“…Many methods such as sol-gel auto-combustion technique [16], chemical coprecipitation [17], citrate precursor method [18], oxalate precursor technique [19], and ceramic method [20] are used to prepare Ni-Cu-Zn spinel ferrite. Among them, the sol-gel auto-combustion method has unique advantages such as excellent composition control, low temperature process, low production cost, and better results.…”

Section: Introductionmentioning

confidence: 99%

Influence of Zn2+ doping on the structural and surface morphological properties of nanocrystalline Ni-Cu spinel ferrite

Awati¹,

Rathod

Mane

et al. 2013

Int Nano Lett

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Ni 0.8−x Cu 0.2 Zn x Fe 2 O 4 (x = 0.0 ≤ 0.6 with steps of 0.2) ferrite nanophase was achieved by sol-gel auto-combustion technique. The as-prepared samples were thermally characterized by thermogravimetry/differential thermal analysis to obtain firing temperature of the materials. The X-ray diffraction pattern indicates the formation of a single-phase cubic spinel structure and shows strong influence of the incorporation of Zn 2+ metal ions on the spinel structure. The annealing treatment does not alter the crystal structure but increases the crystallinity of the samples. The morphological investigations and nanometric sizes of the samples were studied by scanning electron microscopy and transmission electron microscopy. The crystallographic texture due to annealing and Zn 2+ ion doping was systematically investigated by Fourier transform infrared spectroscopy.

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XRD and IR analysis of nanocrystalline Ni–Zn ferrite synthesized by the sol–gel method

Cited by 98 publications

References 7 publications

Dielectric Response of Nix Zn1-x Al Fe O4 Nanoferrites

Dielectric Response of Nix Zn1-x Al Fe O4 Nanoferrites

Synthesis of metal ferrite (MFe₂O₄, M = Co, Cu, Mg, Ni, Zn) nanoparticles as humidity sensor materials

Influence of Zn2+ doping on the structural and surface morphological properties of nanocrystalline Ni-Cu spinel ferrite

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XRD and IR analysis of nanocrystalline Ni–Zn ferrite synthesized by the sol–gel method

Cited by 98 publications

References 7 publications

Dielectric Response of Nix Zn1-x Al Fe O4 Nanoferrites

Dielectric Response of Nix Zn1-x Al Fe O4 Nanoferrites

Synthesis of metal ferrite (MFe2O4, M = Co, Cu, Mg, Ni, Zn) nanoparticles as humidity sensor materials

Influence of Zn2+ doping on the structural and surface morphological properties of nanocrystalline Ni-Cu spinel ferrite

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Synthesis of metal ferrite (MFe₂O₄, M = Co, Cu, Mg, Ni, Zn) nanoparticles as humidity sensor materials