Preparation and dielectric properties of cadmium substituted lithium ferrite using microwave-induced combustion

Watawe, S.C; Bamne, U.A.; Gonbare, S.P.; Tangsali, R.B.

doi:10.1016/j.matchemphys.2007.02.037

Cited by 40 publications

(20 citation statements)

References 19 publications

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“…Noticeably, the lattice parameter was nonlinearly dependent on Mg-substituted concentration for Li 0.5 Fe 2.5Àx Mg x O 4Àd . We can define the chemical formulas of (Fe 1 [Li 0.5Ày Fe 1.5Àx+y Mg x ]O 4 for x = 0 and x > 0, respectively. The formula for x > 0 indicates that Li + ions partially occupy the tetrahedral (A) site and that the distribution of Fe 3+ ions occupying the tetrahedral (A) and octahedral [B] sites changes.…”

Section: Resultsmentioning

confidence: 99%

“…Spinel ferrites have potential applications in electrical components such as memory devices and microwave devices over a wide range of frequency due to their high resistivity and loss behavior [1]. The family of substituted lithium ferrites have attracted the attention of scientists for a long time and have been developed as a replacement for yttrium iron garnet (YIG) owing to their low cost [2].…”

Section: Introductionmentioning

confidence: 99%

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Electrical and magnetic properties of magnesium-substituted lithium ferrite

Hu²

2010

Ceramics International

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrical and magnetic properties of magnesium-substituted lithium ferrite

Hu²

2010

Ceramics International

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“…Magnetic ferrites possess high DC electric resistivity, low eddy current and low dielectric losses [1,2]. They are extensively used in microwave devices, information storage systems, magnetic cores, several medical diagnostic purposes, etc.…”

Section: Introductionmentioning

confidence: 99%

Structural, Magnetic and Electrical Properties of Cu Substituted Mn–Zn Soft Nanoferrites

Anwar

Maqsood

2012

J Supercond Nov Magn

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Soft nanoferrites of nominal composition Mn 0.5 Cu x Zn 0.5−x Fe 2 O 4 with 0.0 ≤ x ≤ 0.35 were prepared by chemical co-precipitation method. The formation of single phase spinel structure with different compositions, sizes and macrostructure were confirmed by X-ray diffraction patterns and scanning electron microscopic (SEM) measurements. The lattice parameter decreased with increase in Cu 2+ content. The crystallite size of the powder samples varied from 14 to 27 nm. The theoretical density increased with increase in Cu 2+ content. Room temperature saturation magnetization was measured as a function of copper content. The saturation magnetization (Ms) and Bohr magneton (μ B ) increases up to x = 0.25 due to increased A-B interactions in the AB 2 O 4 type spinel nanoferrites. Dielectric permittivity, dielectric loss tangent and complex impedance plots were studied in the frequency range 20 Hz-5 MHz. Loss peak occurs for all the studied compositions and shifts towards low frequency with increased Cu 2+ content. Complex impedance spectroscopic studies confirmed that conduction in the samples is due to grain boundaries. The high values of DC electrical resistivity support this result.

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“…Spinel ferrites, which have vast application from microwave to radio frequencies is of great importance from both fundamental and applied research points of view [1][2][3][4][5]. The spinel structure is based on a cubic close-packed array of oxide ions (32e), with ½ of the octahedral sites (16d) and ¼ of tetrahedral sites (8a) occupied by cations.…”

Section: Introductionmentioning

confidence: 99%

Low temperature structural studies of zinc substituted copper ferrite using synchrotron X-ray powder diffraction

Nowicki¹,

Darul²,

Bell³

2011

European Powder Diffraction Conference; August 2010, Darmstadt, Germany

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Abstract. Two samples of the spinel ferrite system Cu 1-x Zn x Fe 2 O 4 with x = 0.0 and x = 0.1 were synthesised by a combustion method. The effect of zinc ion substitution for copper on low temperature structural properties of CuFe 2 O 4 ferrite is reported. Synchrotron X-ray measurements have been performed in the temperature range 300K -15K. It was found that for Cu 0.9 Zn 0.1 Fe 2 O 4 , the sample begins to transform from cubic to tetragonal at about 250K, with the coexistence of both phases down to 15K. No phase transition was observed in the CuFe 2 O 4 spinel below room temperature.

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Preparation and dielectric properties of cadmium substituted lithium ferrite using microwave-induced combustion

Cited by 40 publications

References 19 publications

Electrical and magnetic properties of magnesium-substituted lithium ferrite

Electrical and magnetic properties of magnesium-substituted lithium ferrite

Structural, Magnetic and Electrical Properties of Cu Substituted Mn–Zn Soft Nanoferrites

Low temperature structural studies of zinc substituted copper ferrite using synchrotron X-ray powder diffraction

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