Synthesis, structure, thermal, magnetic, dielectric properties of Ce3+ doped M-type SrFe12O19 and electrochemical determination of L-cysteine

Lakshmikantha, J.; Krishnamurthy, G.; Nayak, R. Hanumantha; Pari, Malathesh; Ranjitha, N.; Naik, Nagaraj

doi:10.1016/j.inoche.2022.110175

Cited by 12 publications

(4 citation statements)

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“…According to literature research, the peak at 531.1 eV corresponds to adsorbed oxygen, while the peak at 529.7 eV represents lattice oxygen. [ 23 ]…”

Section: Resultsmentioning

confidence: 99%

“…Collectively, these factors hinder the alignment of magnetic moments in the presence of an external field, weakening the overall magnetic properties of iron oxide. [ 29 ]…”

Section: Resultsmentioning

confidence: 99%

“…According to literature research, the peak at 531.1 eV corresponds to adsorbed oxygen, while the peak at 529.7 eV represents lattice oxygen. [23] 2.3. Morphological Analysis SEM images of Lu x La y Sr 1-y Fe 12-x O 19 ceramic blocks post hightemperature annealing at 1330 °C, depicted in Figure 6 under the same magnifications, reveal dense sintering.…”

Section: Xpsmentioning

confidence: 99%

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Structural Elucidation and Evaluation of Magnetic and Dielectric Properties of Lu–La Co‐substituted M‐Type Hexagonal Ferrites Synthesized by Chemical Co‐precipitation Method

Wang,

Han

2024

Physica Status Solidi (a)

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In this research, LuxLaySr1–yFe12–xO19, an M‐type strontium ferrite, is synthesized using the coprecipitation method with precursor chemicals. The samples undergo analysis for structure, morphology, and elemental composition through X‐ray diffraction (XRD) and scanning electron microscopy (SEM). Magnetic and dielectric properties are determined using a vibrating sample magnetometer (VSM) and a dielectric property measurement instrument (LCR), respectively. The primary objective of this study is to enhance the dielectric performance of the samples through rare‐earth element doping. The XRD analysis reveals that the samples display a hexagonal single‐phase magnetoplumbite crystal structure. SEM micrographs illustrate a regular hexagonal structure of the grains. VSM analysis affirms LuxLaySr1–yFe12–xO19 as a hard magnetic material with a high coercivity. As the rare‐earth element content increases, the coercivity of the samples significantly decrease from 2065.3 to 910.3 Oe. Dielectric property analysis demonstrates that augmenting the rare‐earth element (Lu–La) content notably increases the relative dielectric constant of the samples. In the low‐frequency region, the relative dielectric constant ranges from 6.71 × 103 to 1.28 × 105, while in the high‐frequency region, it ranges from 3.09 × 103 to 2.03 × 104. Samples doped with rare‐earth elements exhibit a high dielectric constant and low coercivity, rendering them suitable for applications in electromagnetic shielding materials. This can help reduce interference from magnetic fields on internal components while blocking electromagnetic waves.

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“…According to literature research, the peak at 531.1 eV corresponds to adsorbed oxygen, while the peak at 529.7 eV represents lattice oxygen. [ 23 ]…”

Section: Resultsmentioning

confidence: 99%

“…Collectively, these factors hinder the alignment of magnetic moments in the presence of an external field, weakening the overall magnetic properties of iron oxide. [ 29 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Xpsmentioning

confidence: 99%

See 1 more Smart Citation

Structural Elucidation and Evaluation of Magnetic and Dielectric Properties of Lu–La Co‐substituted M‐Type Hexagonal Ferrites Synthesized by Chemical Co‐precipitation Method

Wang,

Han

2024

Physica Status Solidi (a)

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“…Conversely, when Lu 3+ replaces Fe 3+ ions at positions 2a, 2b, and 12k, the originally aligned magnetic moments are canceled out, leading to a decrease in the unit cell's total magnetic moment. Therefore, the effect of Lu 3+ ions substitution in strontium ferrite on material magnetism depends on the speci c positions it replaces [40] . dissolved in acetone within a vacuum glove box and stirred at 70°C for 8 hours to obtain the iron precursor solution.…”

mentioning

confidence: 99%

Structural and magnetic properties of Lu doped SrFe12O19 ferrites

Wang,

Han

2023

Preprint

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In this work, M-type strontium ferrite LuxSrFe12−xO19 (x = 0, 0.2, 0.4, 0.6) was prepared using a precursor chemical co-precipitation method. The structures, morphologies, and elemental compositions of the samples were analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The magnetic properties of the prepared samples were determined using a vibrating sample magnetometer (VSM). XRD peaks revealed its crystalline nature, exhibiting a hexagonal single-phase magnetic spinel crystal structure. SEM micrographs displayed regular hexagonal grain structures, with the grain size gradually decreasing with increasing Lu3+ ions content. VSM analysis confirmed that LuxSrFe12−xO19 is essentially a hard magnetic material with significant coercivity, and the saturation magnetization and remanent magnetization exhibited a trend of initially decreasing and then increasing with the increasing Lu3+ ions content. Furthermore, Lu3+ ions substituted SrFe12O19 ferrites find wide applications in magnetic recording and memory devices.

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