Minimizing of power loss in Li–Cd ferrite by nickel substitution for power applications

Kotnala, R.K.; Dar, M. Abdullah; Verma, Vivek; Singh, Arun; Siddiqui, Waseem Ahmad

doi:10.1016/j.jmmm.2010.07.033

Cited by 38 publications

(12 citation statements)

References 33 publications

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“…The semicircle obtained at high frequency sites represents the resistance of grain and straight line obtained at a low frequency site, represents the resistance of the grain boundary. The obtained results are in good agreement with previous studies (Baruwati et al 2007;Kotnala et al 2010). The Table 1 The structural parameter of pure and Sr 2?…”

Section: Impedance Analysissupporting

confidence: 93%

Effects on structural, optical, and magnetic properties of pure and Sr-substituted MgFe2O4 nanoparticles at different calcination temperatures

Loganathan

Kumar

2015

Appl Nanosci

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In the present work, pure and Sr 2? ions substituted Mg ferrite nanoparticles (NPs) had been prepared by co-precipitation method and their structural, optical, and magnetic properties at different calcination temperatures were studied. On this purpose, thermo gravimetric and differential thermal analysis (TG-DTA), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy, UV-Visible diffused reflectance spectroscopy, impedance spectroscopy, and vibrating sample magnetometer were carried out. The exoand endothermic processes of synthesized precursors were investigated by TG-DTA measurements. The structural properties of the obtained products were examined by XRD analysis and show that the synthesized NPs are in the cubic spinel structure. The existence of two bands around 578-583 and 430-436 cm -1 in FT-IR spectrum also confirmed the formation of spinel-structured ferrite NPs. The lattice constants and particle size are estimated using XRD data and found to be strongly dependent on calcination temperatures. The optical, electrical, and magnetic properties of ferrite compositions also investigated and found to be strongly dependant on calcination temperatures.

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Section: Impedance Analysissupporting

confidence: 93%

Effects on structural, optical, and magnetic properties of pure and Sr-substituted MgFe2O4 nanoparticles at different calcination temperatures

Loganathan

Kumar

2015

Appl Nanosci

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“…Selection of an appropriate method is the key factor to obtain ferrites of high quality. Various processing methods have been developed to obtain nano-crystalline ferrites such as hydrothermal synthesis, chemical co-precipitation, polymeric precursor techniques, sol-gel, shock wave, spray drying, sono-chemical process and mechanical alloying (Sivakumar et al 2011;Kotnala et al 2010). It is well known that different routes produce different microstructures and crystal sizes.…”

Section: Introductionmentioning

confidence: 99%

Study of structure and magnetic properties of Ni–Zn ferrite nano-particles synthesized via co-precipitation and reverse micro-emulsion technique

et al. 2013

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Nano-crystalline Ni-Zn ferrites were synthesized by chemical co-precipitation and reverse microemulsion technique with an average crystallite size of 11 and 6 nm, respectively. The reverse micro-emulsion method has been found to be more appropriate for nanoferrite synthesis as the produced particles are monodisperse and highly crystalline. Zero-field cooled and field cooled magnetization study under different magnetic fields and magnetic hysteresis loops at different temperatures have been performed. The non-saturated M-H loops, absence of hysteresis, and coercivity at room temperature are indicative of the presence of super paramagnetic and singledomain nano-particles for both the materials. In sample 'a', the blocking temperature (T B ) has been observed to decrease from 255 to 120 K on increasing the magnetic field from 50 to 1,000 Oe, which can be attributed to the reduction of magneto crystalline anisotropy constant. The M S and coercivity were found to be higher for sample 'a' as compared with sample 'b' since surface effects are neglected on increasing the crystallite size.

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“…Therefore the net magnetization is given by the vector sum of the magnetization of the two sublattices M A andM B . In the present ferrite samples Ni [3,[17][18].Consequently, M s values will decrease and was observed experimentally. However the drastic decrease for Ni=0.04 needs investigation as saturation magnetization depend on several parameters.…”

Section: Resultsmentioning

confidence: 64%

“…The magnetic properties of ferrites depend upon various factors like the type of substitutions, synthesis method and the sintering temperature. Substituents play an important role in modifying the properties of basic lithium ferrites and various workers reported that Ni substitution enhances the densification which results in change in the magnetic properties [3][4][5]. Considering the synthesis method the chemical method known as the citrate precursor method gives samples at low temperature with high purity.…”

Section: Introductionmentioning

confidence: 99%

Effect on the B-H loop and complex permeability with nickel substitution on Li-Zn ferrite synthesized by the citrate precursor method

Ibetombi

Sanatombi

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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o C after a pre-firing at a temperature of 650 o C. Various characterizations using T C set up, BH loop tracer were carried out on the sintered samples. The X-ray diffraction pattern confirmed the formation of spinel phase. Magnetic properties such as Curie temperature using T C set up, BH loop parameter and complex permeability using BH loop tracer were studied. Experimental results show that the Curie temperature, saturation magnetization and initial permeability decreases with the increase in the Ni 2+ concentration. The complex permeability measured as a function of frequency in the range of 20Hz-2MHz show dispersion. Possible mechanism contributing to the above process is being discussed.

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Minimizing of power loss in Li–Cd ferrite by nickel substitution for power applications

Cited by 38 publications

References 33 publications

Effects on structural, optical, and magnetic properties of pure and Sr-substituted MgFe2O4 nanoparticles at different calcination temperatures

Effects on structural, optical, and magnetic properties of pure and Sr-substituted MgFe2O4 nanoparticles at different calcination temperatures

Study of structure and magnetic properties of Ni–Zn ferrite nano-particles synthesized via co-precipitation and reverse micro-emulsion technique

Effect on the B-H loop and complex permeability with nickel substitution on Li-Zn ferrite synthesized by the citrate precursor method

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