Dependence of the magnetic and magnetoelastic properties of cobalt ferrite on processing parameters

Nlebedim, Ikenna C.; Snyder, John Evan; Moses, Anthony John; Jiles, David

doi:10.1016/j.jmmm.2010.08.026

Cited by 75 publications

(26 citation statements)

References 11 publications

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“…Comparatively, the value of K 1 (CoFe 2 O 4 )¼1.8-3.0Â10 5 J/m 3 was reported [47]. This rough agreement can be commented on considering that the single-ion model should apply rigorously only when ferrites that show similar spinel structures are involved [48]. This assumption of the model is not verified here, because NiZn and NiZnCo ferrites show mixed structures, while that of Co-ferrite is inverted.…”

Section: The Magnetocrystalline Anisotropy Constant K 1 Of Ni 1 à X Zmentioning

confidence: 71%

Experimental determination of magnetocrystalline anisotropy constants and saturation magnetostriction constants of NiZn and NiZnCo ferrites intended to be used for antennas miniaturization

Mattéi

Guen

Chevalier

et al. 2015

Journal of Magnetism and Magnetic Materials

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Section: The Magnetocrystalline Anisotropy Constant K 1 Of Ni 1 à X Zmentioning

confidence: 71%

Experimental determination of magnetocrystalline anisotropy constants and saturation magnetostriction constants of NiZn and NiZnCo ferrites intended to be used for antennas miniaturization

Mattéi

Guen

Chevalier

et al. 2015

Journal of Magnetism and Magnetic Materials

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“…[25,26] In recent years, it has been shown that the cation site occupancy -cation ordering -can be strongly affected by (1) the grain size (finite size effects), (2) material morphology, and (3) the processing conditions. [27][28][29][30][31] As a result, nanocrystalline ferrites whether prepared by chemical solution deposition or physical deposition techniques exhibit properties that are distinct from their microcrystalline (bulk) counterparts. The strong dependence of the material properties on the cation distribution is for example reflected in the variety of magnetic ordering phenomena (ranging from ferrimagnetism to spin glass behavior) that have been observed in the last two decades.…”

Section: Nevertheless Both Tolbert Et Al and Milliron Et Al Have Rmentioning

confidence: 99%

Morphology, Microstructure, and Magnetic Properties of Ordered Large-Pore Mesoporous Cadmium Ferrite Thin Film Spin Glasses

et al. 2013

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RECEIVED DATE (to be automatically inserted after your manuscript is accepted if requiredaccording to the journal that you are submitting your paper to) 2 ABSTRACT Herein, we report the synthesis, microstructure, and magnetic properties of nanocrystalline cadmium ferrite (CdFe 2 O 4 ) thin films with both an ordered cubic structure of 18 nm diameter pores and singlephase spinel grains averaging 13 nm in diameter. These mesoporous materials were produced through facile polymer templating of hydrated nitrate salt precursors. Both the morphology and microstructure, including cation site occupancy and electronic bonding configuration, were analyzed in detail by electron microscopy, grazing incidence small-angle X-ray scattering, Raman and X-ray photoelectron spectroscopy, and N 2 -physisorption. The data obtained demonstrate that the network of pores is retained up to annealing temperatures as high as 650 °C -the onset of crystallization is at ϑ = (590 ± 10) °C. Furthermore, they show that the polymer-templated samples exhibit a "partially" inverted spinel structure with inversion parameter  = 0.40 ± 0.02, which is different from microcrystalline CdFe 2 O 4

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“…It has been experimentally shown that magnetostrictive properties of materials derived from cobalt ferrite, including the strain derivatives, are dependent on processing conditions. [25][26][27] In another study, 28 it was suggested that an enhancement of $200% in strain sensitivity may be due to non-stoichiometry which can also be related to the processing conditions. Therefore it is important to discuss the effect of Zn-substitution on the strain derivative of the samples with respect to the unsubstituted sample in the present study (i.e., x ¼ 0).…”

Section: Magnetostrictive Propertiesmentioning

confidence: 99%

Temperature dependence of the structural, magnetic, and magnetostrictive properties of zinc-substituted cobalt ferrite

Nlebedim

Vinitha

Praveen

et al. 2013

Journal of Applied Physics

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This study presents the effects of substitution of Zn 2+ for Co2+ at low concentrations and the effects of temperature variations on the structural, magnetic, and magnetostrictive properties ofcobalt ferrite. Although the Zn-substituted cobalt ferrite samples, Co1−x Zn xFe2O4 (x = 0.02, 0.04, 0.06, 0.09, and 0.17) did not show observable changes in crystal structure, the magnetic and magnetostrictive properties were strongly affected. The variation in magnetic susceptibilitywith composition can be related to the variations in magnetization, coercive field and magnetocrystalline anisotropy. The changes in coercive field were found to be primarily due to the variations in the magnetocrystalline anisotropy. The effect of magnetocrystalline anisotropyon magnetization was stronger at lower cation concentration than at higher concentrations. The decrease in magnetization around 150 K is attributed to the high magnetocrystalline anisotropyat low temperatures which prevented the maximum applied field of 4 MA/m from causing the saturation of magnetization in the samples. Because the magnetocrystalline anisotropy was determined with the magnetization data using the Law of Approach to saturation magnetization, the reliability of the result was found to decrease with decrease in temperature. Peak-to-peakmagnetostriction amplitude and the strain sensitivity decreased with increase in Znsubstitution. KeywordsAmes Laboratory, Zinc, Magnetic anisotropy, Ferrites, Cobalt, Magnetic fields Disciplines Electromagnetics and Photonics CommentsThe following article appeared in Journal of Applied Physics 113 (2013) This study presents the effects of substitution of Zn 2þ for Co 2þ at low concentrations and the effects of temperature variations on the structural, magnetic, and magnetostrictive properties of cobalt ferrite. Although the Zn-substituted cobalt ferrite samples, Co 1Àx Zn x Fe 2 O 4 (x ¼ 0.02, 0.04, 0.06, 0.09, and 0.17) did not show observable changes in crystal structure, the magnetic and magnetostrictive properties were strongly affected. The variation in magnetic susceptibility with composition can be related to the variations in magnetization, coercive field and magnetocrystalline anisotropy. The changes in coercive field were found to be primarily due to the variations in the magnetocrystalline anisotropy. The effect of magnetocrystalline anisotropy on magnetization was stronger at lower cation concentration than at higher concentrations. The decrease in magnetization around 150 K is attributed to the high magnetocrystalline anisotropy at low temperatures which prevented the maximum applied field of 4 MA/m from causing the saturation of magnetization in the samples. Because the magnetocrystalline anisotropy was determined with the magnetization data using the Law of Approach to saturation magnetization, the reliability of the result was found to decrease with decrease in temperature. Peak-to-peak magnetostriction amplitude and the strain sensitivity decreased with increase in Zn substitution. V C 2013 AIP Publ...

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Dependence of the magnetic and magnetoelastic properties of cobalt ferrite on processing parameters

Cited by 75 publications

References 11 publications

Experimental determination of magnetocrystalline anisotropy constants and saturation magnetostriction constants of NiZn and NiZnCo ferrites intended to be used for antennas miniaturization

Experimental determination of magnetocrystalline anisotropy constants and saturation magnetostriction constants of NiZn and NiZnCo ferrites intended to be used for antennas miniaturization

Morphology, Microstructure, and Magnetic Properties of Ordered Large-Pore Mesoporous Cadmium Ferrite Thin Film Spin Glasses

Temperature dependence of the structural, magnetic, and magnetostrictive properties of zinc-substituted cobalt ferrite

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