Impact of aluminum substitution on the structural and dielectric properties of Ni–Cu spinel ferrite nanoparticles synthesized via sol–gel route

Shahzadi, Kiran; Chandio, Ali Dad; Mustafa, Ghulam; Khalid, Muhammad; Khan, Junaid Kareem; Akhtar, Muhammad Saeed; Gilani, Zaheer Abbas; Asgar, Hassnain

doi:10.1007/s11082-020-02304-w

Cited by 31 publications

(12 citation statements)

References 38 publications

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“…Spinel ferrite nanomaterials attracted a lot of attention due to their unique magnetic, optical and electronic properties [1][2][3][4][5][6]. In a wide variety of spinel ferrites, CoFe 2 O 4 ferrite has big coercivity and can be used in magnetic recording materials [7].…”

Section: Introductionmentioning

confidence: 99%

The structural, magnetic and optical performances of Ni0.2Zn0.2Co0.6Fe2O4 ferrites synthesized by sol-gel route

2021

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In this work, four complexing agents participated in the synthesis of Ni 0.2 Zn 0.2 Co 0.6 Fe 2 O 4 ferrites by sol-gel route. The X-ray diffraction (XRD) pattern showed that samples had formed spinel phase. The Fourier transform infrared (FTIR) spectra of samples showed two absorption bands around 400 cm −1 and 600 cm −1 , which are the characteristics of spinel ferrites. SEM micrographs showed that the prepared particles had different shape. Vibrating sample magnetometer was used to characterize magnetic performances. The prepared samples showed typical hysteresis behaviors at room temperature. The Ni 0.2 Zn 0.2 Co 0.6 Fe 2 O 4 ferrite sample prepared with egg white as a complexing agent had high coercivity (1365.52 Oe) and remanent magnetization (23.95 emu/g), which indicated that the sample had a potential applications for magnetic storage devices. The sample prepared with egg white had a coercivity six times higher than coercivities (168.44-200.47 Oe) of other samples. These findings revealed that egg white is a suitable complexing agent to prepare Ni 0.2 Zn 0.2 Co 0.6 Fe 2 O 4 hard ferrite by sol-gel route. The optical properties are characterized using PL emission spectra and UV-visible absorption spectrum. From the optical band gap (Eg) value, the sample has the characteristics of a semiconductor material. KeywordsNi 0.2 Zn 0.2 Co 0.6 Fe 2 O 4 ferrite • Sol-gel route • Four complexing agents • Magnetic performances • Optical performances

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Section: Introductionmentioning

confidence: 99%

The structural, magnetic and optical performances of Ni0.2Zn0.2Co0.6Fe2O4 ferrites synthesized by sol-gel route

2021

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“…Moreover, the presence of additional peaks at 2θ = 24.1, 49.2, and 64.1° for α‐Fe 2 O 3 secondary phase (JCPDS file no. 87‐1166), possibly attributes to the insufficient reaction (Shahzadi et al., 2020).…”

Section: Resultsmentioning

confidence: 99%

Catalytic degradation of toxic organic dye using an aluminum‐doped Cu_0.4Zn_0.6‐xAl_xFe₂O₄ (x = 0.0, 0.2, 0.4, 0.6) spinel ferrite in a photo‐Fenton system

Akhter

Dutta

Dhar

et al. 2022

Environmental Quality Mgmt

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Catalytic activity of spinel ferrite in breaking down toxic dye materials are promising due to their uniqueness. In this study, aluminum-doped copper zinc ferrite, Cu 0.4 Zn 0.6-x Al x Fe 2 O 4 (x = 0.0, 0.2, 0.4, 0.6), a catalyst for toxic dye degradation is synthesized through chemical co-precipitation route. The formation of the spinel ferrite catalyst is initially confirmed by Fourier transform infrared spectra, which shows the frequency of metal-oxygen bond vibration at 539 and 427 cm −1 attributed to the tetrahedral and octahedral sites respectively. Higher intensity sharp peak of X-ray diffraction for (311) plane is the evidence for the phase purity and the formation of spinel ferrite. The crystallite size is found to decrease with the increase of Al 3+ ion.The surface structure of the obtained particles is investigated using a scanning electron microscope. Analyses of the material's magnetic characteristics using a vibrating sample magnetometer (VSM) revealed that it is, in fact, a soft magnet, as evidenced by the loop of its hysteresis, which is narrow. The catalytic degradation of methylene blue dye under the mechanism of the photo-Fenton process is studied with the obtained spinel ferrites and the result is found to be as high as 96.5%. The process follows pseudo-second order kinetics and the Langmuir isotherm.

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“…'υ1' and 'υ2'. All of the prepared nanoparticle sets reveal that as the lanthanum concentration increased, the frequency band changes significantly, which may be attributed to grain size and lattice parameters (Shahzadi et al, 2020). Furthermore, Using the bandwidth knowledge, the force coefficients Kt and Ko for octahedral and tetrahedral locales are calculated using the formula below.…”

Section: Ftirmentioning

confidence: 99%

Impact of Lanthanum Doping on the Structural, Electrical, and Magnetic Properties of BaFe12O19 Nano Particles

et al. 2021

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These ferrites had been considered very highly valuable electronic materials for many decades. The ferrite compounds have a hexagonal structure. Nano structural and dielectric features for BaFe12-xLaxO19 (0.00, 0.25.0.50, 0.75, 1.00) nano Hexaferrite (NHFs) was studied present research. The Ba NHF prepared via sol-gel technique. The single phase of barium Nano Hexaferrites of various sample was confirmed by XRD, the average crystalline size calculated in the range of 5 to 13 nm.The lattice parameter lattice constant, X-ray density, bulk density, micro strain and lattice strain are the parameters of XRD which are also calculated. The different parameters of XRD also show the decreasing and increasing trend which is totally depend on the concentration. The hexagonal structure also confirmed by FTIR. There are two frequency band are investigated which are ?1 and ?2 which are associated with tetrahedral stretching band and octahedral stretching band respectively. The different frequency band are calculated at different frequency like ?1=500 to 540 and also ?2 = 413. The dielectric properties also measured in the frequency range from 1 MHz to 3 GHz. There are many others parameters are calculated in dielectric properties such as real and imaginary electric modulus, real and imaginary impedance, dielectric constant, dielectric loss and tangent loss. The parameters of dielectric also showing decreasing and increasing in trend. The real and imaginary impedance plot changes as when the frequency increases, the all the specimens converge on one another, and at a higher frequency, the impedance exhibits coherent nature, which is due to the discharge of space charges.

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Impact of aluminum substitution on the structural and dielectric properties of Ni–Cu spinel ferrite nanoparticles synthesized via sol–gel route

Cited by 31 publications

References 38 publications

The structural, magnetic and optical performances of Ni0.2Zn0.2Co0.6Fe2O4 ferrites synthesized by sol-gel route

The structural, magnetic and optical performances of Ni0.2Zn0.2Co0.6Fe2O4 ferrites synthesized by sol-gel route

Catalytic degradation of toxic organic dye using an aluminum‐doped Cu_0.4Zn_0.6‐xAl_xFe₂O₄ (x = 0.0, 0.2, 0.4, 0.6) spinel ferrite in a photo‐Fenton system

Impact of Lanthanum Doping on the Structural, Electrical, and Magnetic Properties of BaFe12O19 Nano Particles

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Impact of aluminum substitution on the structural and dielectric properties of Ni–Cu spinel ferrite nanoparticles synthesized via sol–gel route

Cited by 31 publications

References 38 publications

The structural, magnetic and optical performances of Ni0.2Zn0.2Co0.6Fe2O4 ferrites synthesized by sol-gel route

The structural, magnetic and optical performances of Ni0.2Zn0.2Co0.6Fe2O4 ferrites synthesized by sol-gel route

Catalytic degradation of toxic organic dye using an aluminum‐doped Cu0.4Zn0.6‐xAlxFe2O4 (x = 0.0, 0.2, 0.4, 0.6) spinel ferrite in a photo‐Fenton system

Impact of Lanthanum Doping on the Structural, Electrical, and Magnetic Properties of BaFe12O19 Nano Particles

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Catalytic degradation of toxic organic dye using an aluminum‐doped Cu_0.4Zn_0.6‐xAl_xFe₂O₄ (x = 0.0, 0.2, 0.4, 0.6) spinel ferrite in a photo‐Fenton system