Synthesis, microstructure, dielectric and magnetic properties of Cu substituted Ni–Li ferrites

Singh, Navneet; Agarwal, Ashish; Sanghi, Sujata; Singh, Paramjeet

doi:10.1016/j.jmmm.2010.09.053

Cited by 81 publications

(18 citation statements)

References 27 publications

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“…and Fe 3? becomes approximately equal to the applied field and this phenomenon is termed as ferromagnetic resonance [54]. The dielectric loss tangent values found in the present study matches with the reported values [52].…”

Section: Dielectric Propertiessupporting

confidence: 90%

Preparation, spectroscopic and thermal analysis of hexa-hydrazine nickel cobalt ferrous succinate precursor and study of solid-state properties of its nanosized thermal product, Ni0.5Co0.5Fe2O4

Coutinho

Verenkar

2016

J Therm Anal Calorim

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Nickel cobalt ferrite, Ni 0.5 Co 0.5 Fe 2 O 4 , has been prepared by precursor combustion technique from hexahydrazine nickel cobalt ferrous succinate precursor. The precursor was characterized by chemical analysis, CHNS analysis, infrared spectroscopy, TG-DTA and mass loss studies. The thermal data show how the precursor decomposes in four steps to give stable ferrite phase. The precursor decomposes autocatalytically once initially ignited, to give the 'as-prepared' nano-spinel ferrite. The X-ray diffraction analysis reveals single cubic spinel phase structure. The infrared measurements between 4000 and 350 cm -1 confirmed the intrinsic cation vibrations of the spinel structure. The SEM image clearly shows the nanosized nature of the ferrite. The dielectric constant and loss tangent are found to decrease with increase in frequency which is due to Maxwell-Wagner interfacial polarization. The loss tangent shows a relaxation peak at *1 kHz. The variation of DC electrical resistivity with temperature indicates semiconductor behaviour. The temperature-and field-dependent magnetization data of 'as-prepared' ferrite reveal that the lattice has either a canted or partially misaligned spin structure due to the nanosized nature of the ferrite.

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Section: Dielectric Propertiessupporting

confidence: 90%

Preparation, spectroscopic and thermal analysis of hexa-hydrazine nickel cobalt ferrous succinate precursor and study of solid-state properties of its nanosized thermal product, Ni0.5Co0.5Fe2O4

Coutinho

Verenkar

2016

J Therm Anal Calorim

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“…The shift of 'ν 1 ' and 'ν 2 ' towards lower frequencies with increasing zinc content may be ascribed to the variation in the lattice constant. The increase in the lattice constant affects the Fe 3+_ O 2 ⎯ stretching vibrations and is a major cause for change in band positions [12]. In the present study the absorption band ν 1 does not exhibit any splitting, consequently the possibility of Fe 2+ ions being located at the A-sites is ruled out [13,14].…”

Section: Ftir Absorption Studiesmentioning

confidence: 45%

Structural and magnetic studies of Mg(1−x)ZnxFe2O4 nanoparticles prepared by a solution combustion method

Choodamani¹,

Nagabhushana²,

Ashoka³

et al. 2013

Journal of Alloys and Compounds

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“…Ni-Zn ferrite is a soft magnetic and an important ceramic material which has enormous applications in various fields like electric, magnetic, electronics, microwave devices, catalysts, transformers cores, power conversions, high frequency applications in telecommunications, magnetically control drug delivery system, for multilayer inductor applications, etc [1][2][3][4][5][6][7]. The nanoferrite properties can be easily adjustable, controllable to a great extent by choosing proper preparation methods and suitable doping with divalent, trivalent and rare earth ions [8][9][10].…”

Section: Introductionmentioning

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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Synthesis, microstructure, dielectric and magnetic properties of Cu substituted Ni–Li ferrites

Cited by 81 publications

References 27 publications

Preparation, spectroscopic and thermal analysis of hexa-hydrazine nickel cobalt ferrous succinate precursor and study of solid-state properties of its nanosized thermal product, Ni0.5Co0.5Fe2O4

Preparation, spectroscopic and thermal analysis of hexa-hydrazine nickel cobalt ferrous succinate precursor and study of solid-state properties of its nanosized thermal product, Ni0.5Co0.5Fe2O4

Structural and magnetic studies of Mg(1−x)ZnxFe2O4 nanoparticles prepared by a solution combustion method

Dielectric Response of Nix Zn1-x Al Fe O4 Nanoferrites

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