Tuning the structural, magnetic and multiferroic properties of Sm3+ substituted barium hexaferrites BaFe12-xSmxO19 nanoceramics

Satyapal, Harendra Kumar; Singh, Rakesh Kumar; Kumar, Singh Sonu; Das, Shashank Bhushan

doi:10.1016/j.matpr.2020.12.011

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…Furthermore, the lattice strain of samples BL 0 to BL 5 was computed in the range of 0.21 × 10 −3 -2.14 × 10 −3 . We have shown that decreasing lattice strain is caused by an increase in La 3+ concentrations [39]. As compared to the pristine hexaferrite, a decrease in FWHM of the BL 1 (x = 0.2 sample) was noticed, which resulted in the increase in crystallite size.…”

Section: Methodsmentioning

confidence: 76%

“…In other explanations, whilst comparatively big La 3+ particles are agglomerated, tiny La 3+ particles are uniformly segregated around grain boundaries. The research work reported by Todkar et al, on the Ce-Dy substituted barium hexaferrite nanoparticles, where, average grain size, estimated using Image J software, was also increased from 64.9-90.3 (±2) nm [39]. These findings suggest that La 3+ ions have a high surface-to-volume ratio and significant reactivity [42][43][44].…”

Section: Sem Analysismentioning

confidence: 96%

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Optimization of the structural, optical, and magnetic properties of sol-gel derived La³⁺ substituted nanostructured barium hexaferrites

et al. 2023

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The M-type barium hexaferrite has been considered an impeding material for their use as microwave absorbers and storage devices. In present investigation, the La3+ substituted M-type BaFe12-xLaxO19, (where x = 0, 0.2, 0.4, 0.6, 0.8, 1) was prepared via a facile sol-gel process at 850oC for 3 h. XRD confirmed the hexagonal crystal structure of La3+ substituted BaFe12O19 belonging to P63/mmc space group with the crystallite size in the range of 23.08-39.59 nm, which decreased with the increase in La3+ content. The Rietveld refinements displayed better goodness of fit (χ2) was observed between 1.20-1.90 for proper peak fitting. The W-H plot indicated the decrease in lattice strain (0.21×10-3-2.14×10-3) with the increase in La3+ contents. The SEM imaging revealed the agglomerations and estimated the average grain size in the range of 0.42-3.69 µm. FTIR spectroscopy confirmed the bands in the range of 432-622 cm-1, which represents stretching and bending vibrations of metal-oxygen bonds. The tetrahedral site exhibited a higher force constant and lower bond length than the octahedral site in M-type barium hexaferrite. The photoluminescence spectroscopy demonstrated that a prominent peak of La3+ substituted BaFe12O19 near 481 nm, which falls under the visible range with strong blue emission and indicates the radiative defects present in the crystal. At room temperature, the magnetic measurements indicate that the coercivity (Hc) increased, but the saturation magnetization (Ms) and the retentivity (Mr) decreased with the increase in La3+ substitutions. The anisotropy constant (K) and Bohr magnetron number (nB) were also evaluated between 0.932×106-1.109×106 erg/cm3 and 10.28-11.68 µB, respectively. Hence, the unique photoluminescence and magnetic properties may be responsible for its application in the electronic industry, telecommunication, microwave engineering and storage devices etc.

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Section: Methodsmentioning

confidence: 76%

Section: Sem Analysismentioning

confidence: 96%

Optimization of the structural, optical, and magnetic properties of sol-gel derived La³⁺ substituted nanostructured barium hexaferrites

et al. 2023

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“…This is due to Sm 3+ , which has an ionic radius of 1.09 Å [24] [25], greater than that of Co, at 0.545 Å [26], and which provokes a distorted crystalline structure. This distortion of the unit cell enables lithium ions to migrate and thereby improves the electrochemical reactions [24]. The integrated intensity ratio between the (003) and (004) Bragg reflections (see Figure 4) indicates the degree of cation order in the LiCoO 2 [27] [28] structure.…”

Section: Structural Propertiesmentioning

confidence: 99%

A Structural and Morphological Study of LiCo1-XSmXOY Powders Obtained by the Sol-Gel Method

Calderón¹,

Murillo²,

Romo³

et al. 2022

ANP

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In this study, the synthesis of LiCo 1−X Sm X O y powders (X = 0.002, 0.004, 0.006, 0.008, and 0.1) by the sol-gel method and the influence of Sm on their structural and morphological properties is reported for the first time. The results of x-ray diffraction (XRD) studies show that LiCoO 2 powders synthesized at temperatures up to 700˚C present a characteristic hexagonal crystalline phase of the α-NaFeO 2 type (space group R-3m), revealing a shift in the (0 0 3) Bragg reflection, which reflects the presence of Sm in the crystalline structure. The morphology was spheroidal and, on average, 122 nm in size. Based on the data obtained, LiCo 1−X Sm X O y powders (X = 0.002, 0.004, 0.006, 0.008, and 0.1) show promise as a material for use in the cathodes of lithium-ion batteries.

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Structural, dielectric, and magnetic properties of Pr–Cr co-doped PrxBa1-xCryFe12-yO19 barium hexaferrites

Younus

Murtaza

Aloufi

et al. 2022

Ceramics International

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Tuning the structural, magnetic and multiferroic properties of Sm3+ substituted barium hexaferrites BaFe12-xSmxO19 nanoceramics

Cited by 8 publications

References 23 publications

Optimization of the structural, optical, and magnetic properties of sol-gel derived La³⁺ substituted nanostructured barium hexaferrites

Optimization of the structural, optical, and magnetic properties of sol-gel derived La³⁺ substituted nanostructured barium hexaferrites

A Structural and Morphological Study of LiCo<sub>1-<i>X</i></sub>Sm<sub><i>X</i></sub>O<i><sub>Y</i></sub> Powders Obtained by the Sol-Gel Method

Structural, dielectric, and magnetic properties of Pr–Cr co-doped PrxBa1-xCryFe12-yO19 barium hexaferrites

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Tuning the structural, magnetic and multiferroic properties of Sm3+ substituted barium hexaferrites BaFe12-xSmxO19 nanoceramics

Cited by 8 publications

References 23 publications

Optimization of the structural, optical, and magnetic properties of sol-gel derived La3+ substituted nanostructured barium hexaferrites

Optimization of the structural, optical, and magnetic properties of sol-gel derived La3+ substituted nanostructured barium hexaferrites

A Structural and Morphological Study of LiCo&lt;sub&gt;1-&lt;i&gt;X&lt;/i&gt;&lt;/sub&gt;Sm&lt;sub&gt;&lt;i&gt;X&lt;/i&gt;&lt;/sub&gt;O&lt;i&gt;&lt;sub&gt;Y&lt;/i&gt;&lt;/sub&gt; Powders Obtained by the Sol-Gel Method

Structural, dielectric, and magnetic properties of Pr–Cr co-doped PrxBa1-xCryFe12-yO19 barium hexaferrites

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Optimization of the structural, optical, and magnetic properties of sol-gel derived La³⁺ substituted nanostructured barium hexaferrites

Optimization of the structural, optical, and magnetic properties of sol-gel derived La³⁺ substituted nanostructured barium hexaferrites

A Structural and Morphological Study of LiCo<sub>1-<i>X</i></sub>Sm<sub><i>X</i></sub>O<i><sub>Y</i></sub> Powders Obtained by the Sol-Gel Method