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Mohan, K.S.; Venudhar, Y. C.

doi:10.1023/a:1006623021325

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…The densities of the various samples as measured by the archimedes' Principle and those calculated from the XRD data are also tabulated in Table 1. The densities increase with increasing Co 2+ concentration and similar results were observed by different workers [5,6]. The measured densities of the samples are observed to be 81% to 83% of their theoretical values.…”

Section: Resultssupporting

confidence: 88%

Preparation and studies of electrical properties of cobalt substituted Li-Zn ferrites by sol-gel auto combustion method

et al. 2009

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A series of Co substituted lithium zinc ferrite powders with different content of Co (0.00 to 0.1 in steps of 0.02) were prepared by a novel sol-gel auto combustion process using citric acid. Their spinel structure was confirmed by XRD. The variation in lattice parameter and density with cobalt concentration was studied which showed an increasing trend. A decreasing pattern was observed in variation of porosity with increasing Co. Room temperature dielectric constant and resistivity were studied as a function of composition at 10 KHz. The room temperature dielectric constant decreases with successive addition of Co 2+ in the series. The observed variation in dielectric constant has been explained on the basis of space charge polarization and Koops two layer model. Resistivity is observed to increase with increasing concentration and the observed variation in resistivity has been explained by Verwey hopping mechanism.

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Section: Resultssupporting

confidence: 88%

Preparation and studies of electrical properties of cobalt substituted Li-Zn ferrites by sol-gel auto combustion method

et al. 2009

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“…The study of far-infrared spectrum is an important tool to get information about the position of ions in the crystal through the vibrational modes [32]. According to the group theory, the normal and inverse cubic spinel should have four IR bands representing the four fundamentals ( 1 , 2 , 3 and 4 ) [33].…”

Section: Ir Spectra Analysismentioning

confidence: 99%

“…According to the group theory, the normal and inverse cubic spinel should have four IR bands representing the four fundamentals ( 1 , 2 , 3 and 4 ) [33]. It has been reported that, the first three IR fundamental bands are due to tetrahedral and octahedral complexes, while the fourth one is due to the lattice vibrations [32]. Table 1, where the high frequency bands 1 (about 570) and 2 (393-397) are attributed to the vibrations of iron ions in both tetrahedral and octahedral positions respectively.…”

Section: Ir Spectra Analysismentioning

confidence: 99%