Tuning magnetic properties in the Ce–Al Co-substituted M-type BaSr (6:4) hexaferrites

Makhdoom, A. R.; Ahmed, Fahim; Ghori, Ubaid-ur-Rehman; Ranjha, Qasim A.; Rao, Komal Ali; Javed, Asim; Mazhar, Muhammad; Bukhari, Mehak; Maqsood, Asghari; Asif, Sana Ullah; Khan, Muhammad Wasim

doi:10.1007/s10854-022-07915-5

Cited by 12 publications

(8 citation statements)

References 65 publications

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“…The Hc and Ms values of the non-doped BaFe 12 O 19 hexaferrites were observed around 4.69 KOe having Ms of 51.22 emu g −1 . These values are closer to the already reported values for BaSr (6:4) Hexaferrites [35][36][37]. However, one can observe minor discrepancies in the outcomes which could be associated with the manufacturing method of the material [38,39].…”

Section: Magnetic Propertiessupporting

confidence: 84%

“…Maximum Coercivity and minimum saturation magnetization were perceived for Ba 0.9 Sm 0.1 Fe 11 Al 1 O 19 Hexaferrites, which are 5.79 KOe and 47.27 emu g −1 respectively. The results confirm that Al doping is quite impressive to impact the coercivity of material [26,36]. These results are in good agreement with M-type Hexaferrites that show high magnetocrystalline anisotropy [4].…”

Section: Magnetic Propertiessupporting

confidence: 83%

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Exploring the structural and magnetic trends in Ba_0.9Sm_0.1Fe_12−xAl_xO₁₉ M-type Hexaferrites

Asif¹,

Ranjha²,

Ghori³

et al. 2022

Phys. Scr.

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Current study describes the structural and magnetic properties of Ba0.9Sm0.1Fe12-xAlxO19 (x=0.0, 0.5, 1.0, 2.0, 3.0) M-type hexaferrites. Conventional ceramic route was implied to prepare all the nominal samples. Morphological analysis suggested the non-presence of secondary phases as well as formation of the hexaferrites material. X-ray Diffraction technique was used for structural analysis from which microstructural parameters are calculated and discussed. Magnetic properties are measured at room temperature. The saturation magnetization (Ms) and coercivity (Hc) values shows a cyclic and converse trend for synthesized samples. Firstly, a decrease in Ms and increase in Hc was observed up to intermediate dopant incorporation, and becomes converse for higher doping levels. The maximum coercivity and minimum magnetization is observed for Ba0.9Sm0.1Fe11Al1O19. The c/a and Mr/Ms ratio suggest the formation of perfect M-type hexaferrites. This work suggests that synthesized material is a good option for magnetic applications e.g., transformer and inductor cores, microwave devices, recording heads, and magnetic shielding.

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Section: Magnetic Propertiessupporting

confidence: 84%

Section: Magnetic Propertiessupporting

confidence: 83%

Exploring the structural and magnetic trends in Ba_0.9Sm_0.1Fe_12−xAl_xO₁₉ M-type Hexaferrites

Asif¹,

Ranjha²,

Ghori³

et al. 2022

Phys. Scr.

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“…This is because of the improvement of the magnetocrystalline anisotropy with anisotropic Fe 2+ ions found on the 2a site as in rare earth metals substitutions. The ratio of M r /M s is more prominent than 0.5, which predicts the presence of a single-domain structure in the synthesized materials [62].…”

Section: Vsm Resultsmentioning

confidence: 91%

Effect of ferromagnetic cobalt on characteristics of coercive Aluminium substituted BaFe_11.5Al_0.5O₁₉ hexaferrites

Ijaz,

Asif,

El-Zahhar

et al. 2023

Phys. Scr.

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Magnetic and structural characteristics of M-type barium hexaferrite nanoparticles can be tuned by doping different di or trivalent metal ions. Here BaFe11.5-xAl0.5CoxO19 hexaferrite nanoparticles were synthesized using a sol-gel process, and the influence of doping concentrations on M-type BaFe11.5-xAl0.5CoxO19 hexaferrite nanoparticles was deliberated. The XRD analysis confirms the formation of ferrites successfully. When the doping level increased, the grain dimension (D) initially reduced and then increased. Similarly, the lattice constants ‘a’ and ‘c’ decreased initially and then increased. The findings indicated that the (Mr/Ms) ratio decreased initially as the doping content increased, but at higher doping ranges, it started to rise. At the same time, coercivity (Hc) and magneto-crystalline an-isotropy field (Ha) increased as the doping level increased. Excellent magnetic characteristics were obtained for BaFe11.5-xAl0.5CoxO19 hexaferrites at doping content of (x=1.5), with magnetic moment 10.80µB, saturation magnetization 57.35 emu/g, and coercivity 5.21 kOe along anisotropic applied field of 1.62 kOe. The findings mentioned above imply that magnetic characteristics of M-type Barium hexaferrites can be significantly improved upon doping of Cobalt against Aluminium substituted hexaferrite, which will make such types of Ba-hexaferrite very useful in many applications, for example, in magnetic filters, memory devices, and recording media, etc.

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“…follow the JCPDS#43-0002. The results showed minor change in the intensity also upon the introduction of dopant [31][32][33]. Lattice parameters were obtained using reitveld refinement analysis.…”

Section: Structural Investigationsmentioning

confidence: 99%

“…The crystallite size showed an increase with increase in sintering temperature and in agreement to morphological analysis. The formulas and equations used for calculations could be well studied from literature [43,44].The obtained microstructural parameters were shown in figures 4(a)-(b). db and dx showed an increase with increasing sintering temperature, which could be weellinked to the expansion of lattice with increasing temperature.…”

Section: Structural Investigationsmentioning

confidence: 99%

Structural and magnetic conduct in Sm and Al substituted Ba_0.9Sm_0.1Fe₁₀Al₂O₁₉M-type hexaferrites at different sintering temperatures

et al. 2023

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The hexagonal ferrites with composition Ba0.9Sm0.1Fe10Al2O19 have been prepared by using the conventional solid state reaction method. The prepared samples were then sintered at different sintering temperatures to analyze the effects on the magnetic and structural properties of Barium hexaferrites. These samples were then characterized by using various techniques. For structural characterization, the X-ray diffraction technique was used. XRD results confirmed the phase pure hexagonal structure. SEM micrographs suggested the formation of hexaferrites material with homogenous distribution of particles. Magnetic properties showed that the saturation magnetization value was observed 48.55 emu/g and coercivity 5.01 KOe for the sample sintered at 1220 °C. As the sintering temperature rises, the values for magnetic saturation decrease to 46.24 emu/g, and coercivity increases up to 5.26 KOe at 1270 °C. Furthermore, some magnetic anisotropic parameters such as magnetocrystalline anisotropy constant (K), anisotropy parameter (B), and the anisotropy field (Ha) were also calculated at different sintering temperatures.

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Tuning magnetic properties in the Ce–Al Co-substituted M-type BaSr (6:4) hexaferrites

Cited by 12 publications

References 65 publications

Exploring the structural and magnetic trends in Ba_0.9Sm_0.1Fe_12−xAl_xO₁₉ M-type Hexaferrites

Exploring the structural and magnetic trends in Ba_0.9Sm_0.1Fe_12−xAl_xO₁₉ M-type Hexaferrites

Effect of ferromagnetic cobalt on characteristics of coercive Aluminium substituted BaFe_11.5Al_0.5O₁₉ hexaferrites

Structural and magnetic conduct in Sm and Al substituted Ba_0.9Sm_0.1Fe₁₀Al₂O₁₉M-type hexaferrites at different sintering temperatures

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Tuning magnetic properties in the Ce–Al Co-substituted M-type BaSr (6:4) hexaferrites

Cited by 12 publications

References 65 publications

Exploring the structural and magnetic trends in Ba0.9Sm0.1Fe12−xAlxO19 M-type Hexaferrites

Exploring the structural and magnetic trends in Ba0.9Sm0.1Fe12−xAlxO19 M-type Hexaferrites

Effect of ferromagnetic cobalt on characteristics of coercive Aluminium substituted BaFe11.5Al0.5O19 hexaferrites

Structural and magnetic conduct in Sm and Al substituted Ba0.9Sm0.1Fe10Al2O19M-type hexaferrites at different sintering temperatures

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Exploring the structural and magnetic trends in Ba_0.9Sm_0.1Fe_12−xAl_xO₁₉ M-type Hexaferrites

Exploring the structural and magnetic trends in Ba_0.9Sm_0.1Fe_12−xAl_xO₁₉ M-type Hexaferrites

Effect of ferromagnetic cobalt on characteristics of coercive Aluminium substituted BaFe_11.5Al_0.5O₁₉ hexaferrites

Structural and magnetic conduct in Sm and Al substituted Ba_0.9Sm_0.1Fe₁₀Al₂O₁₉M-type hexaferrites at different sintering temperatures