Impacts of neodymium on structural, spectral and dielectric properties of LiNi0.5Fe2O4 nanocrystalline ferrites fabricated via micro-emulsion technique

Gilani, Zaheer Abbas; Warsi, Muhammad Farooq; Khan, Muhammad Azhar; Shakir, Imran; Shahid, Muhammad; Anjum, Muhammad Naeem

doi:10.1016/j.physe.2015.06.001

Cited by 46 publications

(20 citation statements)

References 28 publications

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“…The FCC spinel structure is described by all of the peaks in the pattern, suggesting that the prepared ferrites had an FCC spinel structure. Some impurity peaks obtained at 2=33°, the presence of these impurity peaks revealed that La 3+ was insoluble in the octahedral site [10]. The XRD pattern shown in Figure 1.…”

Section: Xrd Analysismentioning

confidence: 94%

“…The crystalline size was measured to be in 8 nm to 13 nm range, and was found to be very small. The size of the crystallites increases as the concentration of La 3+ doping increases to be in the range of 8 nm (x=0.0) to 13 nm (x=0.20) [9,10]. The average lattice parameter 'a' can be calculated by the following formula given as:…”

Section: Xrd Analysismentioning

confidence: 99%

“…The FTIR spectra are shown in Figure 2 was ranged between 400 to 1000 cm -1 . The table shows the various frequencies that can be achieved by increasing the La +3 content [10]. The higher frequency bands ν1 varied from 535 to 544 cm -1 whereas in the lower frequency bands ν2 values remain same which shows that the frequency band remain static.…”

Section: Ftir Spectroscopymentioning

confidence: 99%

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Synthesis and Characterization of Lanthanum doped Co-Zn Spinel Ferrites Nanoparticles by Sol-Gel Auto Combustion Method

Gilani¹,

Farooq²,

Asghar³

et al. 2021

Preprint

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Spinel ferrites nanoparticles play a significant role in our everyday lives. In the current work, La3+ doped Co-Zn ferrites with chemical formula Co0.5Zn0.5LaxFe2−xO4 (x = 0.00 to x = 0.2 with step size 0.04) was effectively prepared by sol gel technique. The formation of FCC spinel structure was confirmed by X-Ray diffraction (XRD) analysis. The average crystallite size were calculated to be in the 8 nm to 13 nm range. The lattice parameters were found to be decreased with the doping of lanthanum (La3+) contents. X- Ray density is analyzed to increase as the concentration of (La3+) doping increases, this is due to the fact that La3+ ion has a higher molar weight than Fe3+ ion. The spinel phase structure was affirmed by using FTIR.The two main absorption bands ν1 and ν2 are referred to tetrahedral stretching band and octahedral stretching band respectively, is found to be in the range of at around 400–530 cm− 1. Spinel ferrites, such as Co-Zn spinel ferrites, have dielectric features that make them ideal for use in high-frequency applications. With new potential applications being investigated all the time. Physical properties, synthesis method, as well as sintering temperature and time, are all important factors in regulating the properties of dielectric materials. The dielectric features were measured in the frequency of 1 MHz to 3 GHz range. Lowered dielectric parameters studied across a higher frequency range recommend that such nano crystalline ferrites could be used to fabricate the equipment needed to perform at GHz frequencies.

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Section: Xrd Analysismentioning

confidence: 94%

Section: Xrd Analysismentioning

confidence: 99%

Section: Ftir Spectroscopymentioning

confidence: 99%

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Synthesis and Characterization of Lanthanum doped Co-Zn Spinel Ferrites Nanoparticles by Sol-Gel Auto Combustion Method

Gilani¹,

Farooq²,

Asghar³

et al. 2021

Preprint

Self Cite

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“…So, it can be said that while going to the higher concentration of dopant metal ions, there is a probability of single phase composition to get altered to biphasic. [35][36][37] The lattice parameters of all the samples were calculated using Le bail renement method (built in TOPAS V2.1 of BRUKER AXS) and its values is given in Table 1. The lattice parameter was found to increase with increasing Mn 3+ (8.36-8.38 Å), Ni 2+ (8.37-8.40 Å), Co 2+ (8.379-8.390 Å) and Zn 2+ (8.379-8.42 Å) substitution 34,38 which was attributed to the larger ionic radii of Mn 3+ (0.645 Å), Ni 2+ (0.78 Å), Co 2+ (0.82 Å) and Zn 2+ (0.82 Å) substituted ions as compared that of iron Fe 3+ (0.64 Å).…”

Section: Powder X-ray Diffraction (Xrd) Studiesmentioning

confidence: 99%

Substituted Co–Cu–Zn nanoferrites: synthesis, fundamental and redox catalytic properties for the degradation of methyl orange

Bhukal

Dhiman

Bansal³

et al. 2016

RSC Adv.

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“…The electrical and magnetic properties of ferrites have been reported to be strongly dependent on the purity of the starting ferrite powder, the microstructure as well as the grain boundary chemistry [1,2,9,13]. Typically, high purity, uniform composition and * Author for correspondence (aliphysics1@gmail.com) good microstructure properties that developed are essential for the high performance of the ferrites [1,[14][15][16]. Among various ferrites, nanosize cobalt ferrite is a hard magnetic material with high coercivity, high saturation magnetization and high electrical resistivity.…”

Section: Introductionmentioning

confidence: 99%

Cu2+ and Al3+ co-substituted cobalt ferrite: structural analysis, morphology and magnetic properties

et al. 2016

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Cu-Al substituted Co ferrite nanopowders, Co 1−x Cu x Fe 2−x Al x O 4 (0.0 ≤ x ≤ 0.8) were synthesized by the co-precipitation method. The effect of Cu-Al substitution on the structural and magnetic properties have been investigated. X-ray diffraction (XRD) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM) and vibrating sample magnetometer (VSM) are used for studying the effect of variation in the Cu-Al substitution and its impact on particle size, magnetic properties such as M s and H c. Cu-Al substitution occurs and produce a secondary phase, α-Fe 2 O 3. The crystallite size of the powder calcined at 800 • C was in the range of 19-26 nm. The lattice parameter decreases with increasing Cu-Al content. The nanostructural features were examined by FESEM images. Infrared absorption (IR) spectra shows two vibrational bands; at around 600 (v 1) and 400 cm −1 (v 2). They are attributed to the tetrahedral and octahedral group complexes of the spinel lattice, respectively. It was found that the physical and magnetic properties have changed with Cu-Al contents. The saturation magnetization decreases with the increase in Cu-Al substitution. The reduction of coercive force, saturation magnetization and magnetic moments are may be due to dilution of the magnetic interaction.

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Impacts of neodymium on structural, spectral and dielectric properties of LiNi0.5Fe2O4 nanocrystalline ferrites fabricated via micro-emulsion technique

Cited by 46 publications

References 28 publications

Synthesis and Characterization of Lanthanum doped Co-Zn Spinel Ferrites Nanoparticles by Sol-Gel Auto Combustion Method

Synthesis and Characterization of Lanthanum doped Co-Zn Spinel Ferrites Nanoparticles by Sol-Gel Auto Combustion Method

Substituted Co–Cu–Zn nanoferrites: synthesis, fundamental and redox catalytic properties for the degradation of methyl orange

Cu2+ and Al3+ co-substituted cobalt ferrite: structural analysis, morphology and magnetic properties

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