Effect of Nd3+ substitution on structural and electrical properties of nanocrystalline zinc ferrite

Shinde, Tukaram J.; Gadkari, Ashok B.; Vasambekar, P. N.

doi:10.1016/j.jmmm.2010.04.026

Cited by 59 publications

(25 citation statements)

References 51 publications

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“…6 shows a sharp decrease in M S with increasing titanium concentration over x = 0.1. The observed decrease in magnetization in the present system can be understood also on the basis of Neel's model [11]. For concentrations of x > 0.1, the diamagnetic titanium ions occupy B-sites and force Fe 3+ ions to redistribute in A-sites and cause a larger reduction in the B-sublattice magnetisation.…”

Section: Resultssupporting

confidence: 53%

“…Nanoparticles of spinel ferrites illustrated enhanced properties by virtue of their unique electronic structure [9][10][11][12][13][14]. It was found that when the particle diameter reduced to a definite size, spinel ferrite particles exhibit the so-called superparamagnetic properties, which are of great interest in macroscopic quantum tunneling of spin states [15].…”

Section: Introductionmentioning

confidence: 99%

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Hydrothermal synthesis and characterizations of Ti substituted Mn-ferrites

Mostafa

Hessien

Shaltout

2012

Journal of Alloys and Compounds

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Section: Resultssupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis and characterizations of Ti substituted Mn-ferrites

Mostafa

Hessien

Shaltout

2012

Journal of Alloys and Compounds

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“…Bharathi et al [4] have reported that the magneto capacitance and the dielectric constant increase with Gd and Nd ion substitution in nickel ferrites. Increase in DC resistivity and dielectric loss has been reported by Shinde et al [5] in zinc ferrite, by Nd 3? substitution.…”

Section: Introductionmentioning

confidence: 71%

“…The temperature independence of conductivity at higher temperature regions can be explained on the basis of Matliessen's rule [5,35].…”

Section: Ac Conductivitymentioning

confidence: 99%

Effect of Gd3+ substitution on the structural and electrical properties of Mg0.75Zn0.25Fe2O4 nanoparticles

Sebastian¹,

Mohammed²

2016

Indian J Phys

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Nanoparticles of gadolinium substituted Mg-Zn ferrite, Mg 0.75 Zn 0.25 Gd x Fe 2-x O 4 (where x = 0.00, 0.05, 0.10, 0.15) have been prepared by the sol-gel technique. The lattice constant is found to increase with increase in the Gd 3? ion concentration. The observed variation of dielectric constant with frequency is explained on the basis of the MaxwellWagner two layer model and the electron hopping mechanism. The dielectric constant and dielectric loss decrease with Gd 3? ion substitution. The variation of AC conductivity with frequency suggests that the conduction is due to small polaron hopping. It is also noticed that the dielectric constant and the AC conductivity increase with temperature and it is explained in terms of the thermally enhanced drift mobility of the charge carriers. The observed low value of dielectric constant and also the dielectric loss factor obtained for gadolinium substituted ferrites make them desirable for high frequency applications.

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“…Hopping between A-and B-sites does not limit for the simple reason that there are only Fe 3+ at A-site and only Fe 2+ preferentially occupy B-site during processing. The activation energy was calculated by according to following relation [22]:…”

Section: Infrared Spectroscopymentioning

confidence: 99%