Structural, dielectric, and magnetic properties of CaBaCo2-xZnxNdyFe12-yO22 Y-type hexaferrites

Nadeem, Muhammad; Khan, Hasan M.; Buzdar, Saeed Ahmad; Ahmed, Javed; Assiri, Mohammed A.; Imran, Muhammad; Mazhar, Mohammad Ehsan; Nisa, Mehrun; Raza, Mohammad Ehsan; Raza, Benish; Jamshed, Mohammad

doi:10.1007/s10854-022-07804-x

Cited by 9 publications

(5 citation statements)

References 38 publications

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“…The O and Ca 2+ ions swap electrons when CaFe 2 O 4 develops in the Td and Oh sites. 41 The UV-vis spectra of CaFe 2 O 4 /CQDs ( Fig. 4(b) ) revealed the same peaks as of CaFe 2 O 4 with stronger adsorption.…”

Section: Resultsmentioning

confidence: 64%

One-pot hydrothermal synthesis of a carbon quantum dot/CaFe₂O₄ hybrid nanocomposite for carcinogenic Congo red dye degradation

et al. 2023

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Section: Resultsmentioning

confidence: 64%

One-pot hydrothermal synthesis of a carbon quantum dot/CaFe₂O₄ hybrid nanocomposite for carcinogenic Congo red dye degradation

et al. 2023

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“…σ ac = σ 1 (T) + σ 2 (ω,T) (10) The rst term in this formula, "σ 1 (T)" is dc electrical conductivity, which is frequency independent. It is contingent on the free charge carriers' drift mobility.…”

Section: Ac Conductivity (σAc)mentioning

confidence: 99%

“…Y-type hexaferrites with planar magnetic anisotropy have a larger magnetic permeability in the GHz frequency range than other hexagonal ferrites having uniaxial magnetic anisotropy, which is interesting to many researchers [7][8][9]. Hexaferrites are classi ed into different types based on their chemical composition, such as M-, Y-, Z-, X-, U-, and W-type hexagonal ferrites [10][11][12][13]. The Y-type hexagonal ferrites' crystalline structure was described as an alternating stacking of the S and T blocks along the caxis with space group R-3m [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Structural, Dielectric, and Magnetic Properties of Mn-Yb-doped Y-type Hexaferrites

Nadeem

Khan

Buzdar

et al. 2022

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This study aimed to determine the effect of Mn2+ and Yb3+ ions substitution on the structural, dielectric, morphological, and magnetic properties of CaBaCo2 − xMnxYbyFe12−yO22 where x = 0.00-0.1 and y = 0.00-0.01 Y-type hexagonal ferrites prepared by sol-gel auto combustion. For 6 hours, samples were calcined at 1050 degrees Celsius. X-ray diffraction (XRD) analysis was used to study the formation phase of Y-type hexaferrites. The calculated structural auxiliary parameters, such as lattice constants (a and c), cell volume (Vcell), X-ray density (dx), bulk density (db), and porosity (P), were found to be within the following ranges: a = 5.891 to 5.9Å, c = .43.466 to 43.543Å, Vcell 1310.53 to 1312.26Å3, dx = 5.01 to 5.05(g/cm− 1) db = 2.622 to 3.032 (g/cm− 1)and P = 39.969 to 47.665%. The location of the ions, including their respective bonds, inside the structure of the lattice matrix, was revealed by Fourier-transform infrared spectroscopy (FTIR). SEM pictures confirmed the plate-like shape of the particles, confirming the XRD findings. In the dielectric analysis, the typical dielectric response of ferrites was observed. Grain contribution is low when compared to grain boundaries contribution The generated Y-type hexaferrites samples' multidomain magnetic nature resulted in domain wall displacement, which affects the coercivity values. A vibrating sample magnetometer was used to investigate magnetic characteristics (VSM). The saturation magnetization (Ms), Retentivity (Mr), and coercivity (Hc) of the material were found to be 4.11 to 2.21 emu/g, 2.33 to 1.22emu/g, and 1776.78 to 2283,51Oe, respectively. These powders can be used as pre-eminent contender materials for perpendicular recording media (PMR) applications. Corresponding Author’s E-mail: hmkhan@iub.edu.pk

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“…The absorption peaks at wave number 417, 544,608 and 672 cm -1 assigned to intrinsic stretching vibration between metal and oxygen ions at octahedral and tetrahedral sites respectively within samples which is the characteristic key peaks of hexaferrites [23][24]. Numerous absorption peaks observed at 1367, 1453, 1510 and 1641 cm -1 can be attributed to metal-oxygen-metal such as (Fe-O-Fe, Dy-O-Dy) bonds bridging associations [25][26]. An intense peak recorded at 2360 cm -1 which originate due to H-O stretching vibration, consequence of hydrogen bonding.…”

Section: • Electrical Polarizationmentioning

confidence: 99%

Unraveling the structural, electrical Polarization, FTIR, Thermal and electrochemical properties of Dy 3+ substituted ?-ferrites

Ahmad¹,

Aziz²,

Sadiq³

et al. 2022

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This research article reveals the effect of Dy +3 substitution on ?-ferrites KFe 11-x Dy x O 17 with composition (x=0.00, 0.25, 0.50, 0.75 and 1.0). The samples were synthesized by sol-gel auto- combustion method, sintered at 950 o C temperature. The XRD patterns confirmed the single phase of the synthesized samples. The crystallite size varied in the range of 21.49 nm to 25.24 nm for all samples. The polarization verses electric field (P-E) loops indicated the loosy behavior in all samples. The lossy behavior of the samples was seemed to be increased up to x=0.5 and then decreased. The theoretical expression was used to fit an upper branch of P-E loops. FT-IR spectra showed absorption bands at different wavenumbers due to M-O-M stretching vibrations, H-O-H stretching, and C-O-C stretching vibrations, which also confirmed the formation of the single-phase in the samples. Electrochemical measurements of synthesized nano ferrites were carried out by using cyclic voltammetry in a 3.0 M KOH solution. Electrochemical impedance spectroscopy (EIS) has been described by Nyquist plots.

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Structural, dielectric, and magnetic properties of CaBaCo2-xZnxNdyFe12-yO22 Y-type hexaferrites

Cited by 9 publications

References 38 publications

One-pot hydrothermal synthesis of a carbon quantum dot/CaFe₂O₄ hybrid nanocomposite for carcinogenic Congo red dye degradation

One-pot hydrothermal synthesis of a carbon quantum dot/CaFe₂O₄ hybrid nanocomposite for carcinogenic Congo red dye degradation

Enhanced Structural, Dielectric, and Magnetic Properties of Mn-Yb-doped Y-type Hexaferrites

Unraveling the structural, electrical Polarization, FTIR, Thermal and electrochemical properties of Dy 3+ substituted ?-ferrites

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Structural, dielectric, and magnetic properties of CaBaCo2-xZnxNdyFe12-yO22 Y-type hexaferrites

Cited by 9 publications

References 38 publications

One-pot hydrothermal synthesis of a carbon quantum dot/CaFe2O4 hybrid nanocomposite for carcinogenic Congo red dye degradation

One-pot hydrothermal synthesis of a carbon quantum dot/CaFe2O4 hybrid nanocomposite for carcinogenic Congo red dye degradation

Enhanced Structural, Dielectric, and Magnetic Properties of Mn-Yb-doped Y-type Hexaferrites

Unraveling the structural, electrical Polarization, FTIR, Thermal and electrochemical properties of Dy 3+ substituted ?-ferrites

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One-pot hydrothermal synthesis of a carbon quantum dot/CaFe₂O₄ hybrid nanocomposite for carcinogenic Congo red dye degradation

One-pot hydrothermal synthesis of a carbon quantum dot/CaFe₂O₄ hybrid nanocomposite for carcinogenic Congo red dye degradation