Modification of the Magnetic Properties of Co&lt;sub&gt;2&lt;/sub&gt;Y Hexaferrites by Divalent and Trivalent Metal Substitutions

Mahmood, Sami H.; Zaqsaw, Muna D.; Mohsen, Osama; Awadallah, Ahmad; Bsoul, Ibrahim; Awawdeh, Mufeed; Mohaidat, Qassem I.

doi:10.4028/www.scientific.net/ssp.241.93

Cited by 45 publications

(12 citation statements)

References 124 publications

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“…Therefore, as shown in Fig. 8 , we can mention (αhυ) 2 versus hυ instead of (αhυ) n versus hυ. From Fig.…”

Section: Resultsmentioning

confidence: 97%

“…The general chemical formula of M-type hexaferrite can be written as MFe 12 O 19 (M = divalent elements like Ba, Sr, Pb, Zn, Mg, Ni etc.) which is like the magnetoplumbite structure 2 .…”

Section: Introductionmentioning

confidence: 89%

“…Different properties such as crystal structure, particle size, surface morphology, preparation method, cation distribution etc., can reinforce to achieve the above-mentioned applications 1 . Generally, the hexagonal ferrites were categorized into six types viz., M (SrFe 12 O 19 ), W (BaZn 2 Fe 16 O 27 ), X (Ba 2 Mg 2 Fe 28 O 46 ), Y (Ba 2 Co 2 Fe 12 O 22 ), and Z (Ba 3 Mn 2 Fe 24 O 41 ) 2 . The M-type hexaferrites come under hard ferrite category.…”

Section: Introductionmentioning

confidence: 99%

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Structural, electrical, and magnetic properties of nano Sr1−XLaXFe12O19 (X = 0.2–0.8)

Basha

Kumar

Naidu

et al. 2022

Sci Rep

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The current work is mainly devoted to the synthesis, structural, electrical, and magnetic characterization of Sr1−XLaXFe12O19 (X = 0.2–0.8) (SLFO) nanoparticles synthesized via the hydrothermal technique. The hexagonal peaks were determined using X-ray diffraction analysis. The obtained results indicated that the lattice constants were noted to be increasing from 0.58801 to 0.58825 nm (a = b), and 2.30309 to 2.30341 nm (c) with increase of in ‘X’. The morphological studies ensured that the grains as well as nanoparticles of SLFO acquired almost spherical shape. The optical properties were investigated using FTIR and UV–Visible spectra. The optical bandgap (Eg) of SLFO was found to be increasing from 1.866 to 2.118 eV with increase of dopant content. The electrical properties of SLFO were studied in detail as a function of temperature, and frequency. In addition, the dielectric modulus, and impedance spectroscopy analysis was carried out to describe the space charge polarization, and electric conduction mechanism, respectively. The hysteresis loop (M–H curves) of SLFO revealed the decrease of magnetization from 36.34 to 7.17 emu/g with increase in ‘X’.

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“…Therefore, as shown in Fig. 8 , we can mention (αhυ) 2 versus hυ instead of (αhυ) n versus hυ. From Fig.…”

Section: Resultsmentioning

confidence: 97%

“…The general chemical formula of M-type hexaferrite can be written as MFe 12 O 19 (M = divalent elements like Ba, Sr, Pb, Zn, Mg, Ni etc.) which is like the magnetoplumbite structure 2 .…”

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Structural, electrical, and magnetic properties of nano Sr1−XLaXFe12O19 (X = 0.2–0.8)

Basha

Kumar

Naidu

et al. 2022

Sci Rep

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“…Hexaferrites are widely used as essential components for a large variety of industrial and technological applications; automotive industry, electronic, telecommunication, data storage and processing, microwave devices, instrumentation, radar technologies, and motor industry [1][2][3][4][5][6][7]. Hexaferrites can be classified into six main types: M, Y, Z, W, X, and U, according to different stacking sequences of S, R, and T fundamental structural blocks in their crystal structure [8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structural, and Magnetic Properties of Ba₃(Zn_xMg_1-x)₂Fe₂₄O₄₁ Z-Type Hexaferrites

et al. 2019

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This article is concerned with the synthesis of high-quality (Mg, Zn)2Z hexaferrites. A series of the ferrites Ba3(ZnxMg1−x)2Fe24O41 (x = 0.5, 0.7, and 1.0) were prepared by high-energy ball milling and sintering at 1250 • C for 2 h. The structural and magnetic properties of the samples were investigated using X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometer. X-ray diffraction and thermomagnetic studies indicated that the Z-type phase was dominant at x = 0.5, and decreased with the increase of x, whereas the fraction of the Y-type hexaferrite increased. The saturation magnetization and initial permeability, however, increased slightly with the increase of x. The coercivity, on the other hand, was in the range 40-54 Oe for all samples, and the magnetocrystalline anisotropy field did not change significantly with increasing x. The FMR frequency estimated from the static magnetic parameters was ≈ 19 GHz for all samples.

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“…Based on their structures and chemical compositions, barium-based hexaferrites are classified into six main types [8]. In all of these ferrites, Ba can be replaced by Sr, Pb or other elements [9].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of efficient Pb dopant in R and R–S blocks of BaFe12O19 structure synthesized by co-precipitation method

2019

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Site occupancy plays an important role in the properties of the materials in general, and in the case of ferrites, this makes a significant effect. Barium ferrite has a wide range of applications ranging from everyday applications to sophisticated communication technologies. Two compositions Ba 1−x Pb x Fe 12 O 19 and BaPb x Fe 12−x O 19 (x = 0.0-1.0) were synthesized by co-precipitation method using similar synthesis conditions. The aim was to understand the different behaviors when Pb replaced Ba in R and R * blocks in the first composition, while in the second composition it replaced iron in RSR * S * blocks. Microstructural and morphological variations in both synthesized compositions because of Pb dopant were responsible for affecting all properties. Higher ionic radius (1.76 Å), lower melting point (950 °C) of lead and gradually increased concentration were responsible for generating stresses and distortions of different magnitudes in both compositions. Magnetic and DC electrical characterizations were investigated by applying similar conditions. Higher phase purity and better morphology are obtained when Ba is replaced by Pb. Strong variation in coercivity due to decrease in anisotropic energy is useful in high-density storage devices. For the other composition, when Fe is replaced by Pb, higher resistivity is obtained. The obtained range of resistivity is useful against eddy current losses in high-frequency devices.

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Modification of the Magnetic Properties of Co<sub>2</sub>Y Hexaferrites by Divalent and Trivalent Metal Substitutions

Cited by 45 publications

References 124 publications

Structural, electrical, and magnetic properties of nano Sr1−XLaXFe12O19 (X = 0.2–0.8)

Structural, electrical, and magnetic properties of nano Sr1−XLaXFe12O19 (X = 0.2–0.8)

Synthesis, Structural, and Magnetic Properties of Ba₃(Zn_xMg_1-x)₂Fe₂₄O₄₁ Z-Type Hexaferrites

Comparative analysis of efficient Pb dopant in R and R–S blocks of BaFe12O19 structure synthesized by co-precipitation method

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Modification of the Magnetic Properties of Co<sub>2</sub>Y Hexaferrites by Divalent and Trivalent Metal Substitutions

Cited by 45 publications

References 124 publications

Structural, electrical, and magnetic properties of nano Sr1−XLaXFe12O19 (X = 0.2–0.8)

Structural, electrical, and magnetic properties of nano Sr1−XLaXFe12O19 (X = 0.2–0.8)

Synthesis, Structural, and Magnetic Properties of Ba3(ZnxMg1-x)2Fe24O41 Z-Type Hexaferrites

Comparative analysis of efficient Pb dopant in R and R–S blocks of BaFe12O19 structure synthesized by co-precipitation method

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Synthesis, Structural, and Magnetic Properties of Ba₃(Zn_xMg_1-x)₂Fe₂₄O₄₁ Z-Type Hexaferrites