Correlation between milling-induced strain, microstructure, and magnetic properties in anisotropic SrFe12O19 powders

Mocherla, Pavana S. V.; Ramya, V; Kar, Debendranath; Prabhu, D.; Gopalan, R.

doi:10.1016/j.ceramint.2022.05.361

Cited by 9 publications

(3 citation statements)

References 33 publications

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“…[7] To enhance ferrites' performance, researchers have explored various avenues, such as adjusting sintering temperature, modifying the gas atmosphere, or employing composites with other materials. [8][9][10][11][12] It has been observed that doping with transition-metal ions or similar-sized rareearth ions can bring about significant alterations in ferrites' properties. The magnetic characteristics of doped magnetic nanoferrites hinge on the composition, concentration, morphology, particle size, and synthesis techniques of the doping elements.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

“…Firstly, considering the valence states of the atoms, ions tend to replace other ions with the same valence state [10,11] . Secondly, taking into account the ionic radii, ions tend to replace ions with similar radii to minimize lattice distortion [5,12,13] .Hexagonal ferrites exhibit excellent magnetic properties with high saturation magnetization and coercivity, making them widely applicable in the elds of electronics, information technology, and magnetic storage [2, 3,14] . With technological advancements, SrFe 12 O 19 has emerged as a challenging and competitive material with broad applications [15] .…”

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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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Structural and physical investigations of Sr1–xDyxFe12–yCoyO19; (x = 0, 0.05 and y = 0, 0.5) for wastewater treatment

Alzaidy,

Almutairi,

Ramadan

2024

Appl. Phys. A

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Correlation between milling-induced strain, microstructure, and magnetic properties in anisotropic SrFe12O19 powders

Cited by 9 publications

References 33 publications

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

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

Structural and magnetic properties of Lu doped SrFe12O19 ferrites

Structural and physical investigations of Sr1–xDyxFe12–yCoyO19; (x = 0, 0.05 and y = 0, 0.5) for wastewater treatment

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