Related references
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Article
Chemistry, Physical
Swati Verma et al.
Summary: Polycrystalline samples of M-type hexaferrite with varying chemical composition were successfully synthesized using solid state reaction technique. The structural, microstructural and magnetic properties of these samples were investigated. The results showed good phase purity, decreased crystallite size and increased cell volume with increasing dopant concentration. Furthermore, the hexaferrite samples exhibited excellent magnetic properties, making them suitable for various applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Multidisciplinary
Dmitry V. Wagner et al.
Summary: The manufacturing and researching of magnetic materials requires the development of new automated devices for measuring their magnetic properties. To obtain nanosized materials with a pure phase, it is necessary to modernize former methods and develop new methods for synthesizing materials. A pulse magnetometer was made to study magnetic hysteresis loops, which can conduct studies of the full cycle using pulsed magnetic fields. M-type BaFe12O19 hexagonal ferrites were synthesized and their structural, phase, and magnetic characteristics were studied. The methods for synthesizing BaFe12O19 hexagonal ferrites were estimated and compared, and their properties depend on the method of synthesis.
Article
Materials Science, Multidisciplinary
Anand Kumari et al.
Summary: Multiferroic composites with varying concentrations of (1 - x) BaTiO3-(x) BaFe12O19 (x = 0.50, 0.60, 0.70) were successfully synthesized using the solid-state reaction method. The composites showed the presence of BaTiO3 as the ferroelectric phase and BaFe12O19 as the ferromagnetic phase. XRD analysis confirmed the formation of crystal structure and phase purity without any chemical reaction. The dielectric, electric, and magnetic properties of the composites were analyzed, and an enhancement in the magnetic parameters was observed with an increase in the ferrite content.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Ceramics
Shagufta Gulbadan et al.
Summary: The sol-gel auto-combustion process was used to synthesize M-type hexagonal ferrite powder samples with the chemical formula Ba0.3Sr0.7-xCoxFe12-ySmyO19 (x = 0-0.5, y = 0-0.05). The samples were analyzed using X-ray diffraction technique (XRD), Raman, and photoluminescence spectroscopies. The results showed that the samples possessed a hexagonal structure and had the impurity phase alpha-Fe2O3. The samples demonstrated semiconductor properties with a bandgap energy of 1.875 eV and were found to be suitable for microwave and high-frequency applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Shagufta Gulbadan et al.
Summary: Ba0.6Sr0.4-xYbxFe12-yCoyO19 M-type hexaferrite was synthesized using the auto combustion sol-gel process and sintered in a muffle furnace. XRD, FTIR, Raman, and Photoluminescence spectroscopies were used to analyze the samples. The XRD patterns confirmed the single phase of the synthesized samples. Changes in Yb-Co concentration affected lattice parameters and unit cell volume. FTIR spectroscopy revealed the formation of multiple absorption bands. Raman spectra showed strain in the unit cell. PL spectra exhibited emissions in the range of 630 nm-700 nm. The substitution improved dielectric losses and AC conductivity. The findings suggest that samples with appropriate cationic substitution can be used for microwave and high-frequency applications.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Jie Wang et al.
Summary: The microwave absorbing properties of hexagonal barium ferrites (BaM) were studied by using an innovative hydrothermal method with different mineralizers. The crystal structure, morphology, magnetoelectric properties, and microwave absorption properties of BaM were systematically investigated. BaM synthesized with KOH mineralizer showed enhanced electromagnetic wave absorption performance, with a minimum reflection loss (RLmin) of -17.59 dB at 13.2 GHz and an effective absorption bandwidth of 3.2 GHz (11.6-14.8 GHz). This study provides an effective method to enhance the microwave absorption properties of BaM and suggests its potential engineering applications for 5G communication.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xueying Wang et al.
Summary: The adjustment of crystal structures and properties by ion substitution has gained increasing interest in recent years for solving issues in LTCC microwave device preparation. In this study, Fe3+ ions were substituted in low-temperature sintered BaFe12O19, and the changes in microstructures, dielectric characteristics, and magnetic properties were examined. The results showed significant changes in the crystal lattice, dielectric properties, and magnetic parameters of BaM after the substitution of Ga3+ ions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Y. Noratiqah et al.
Summary: The BaFe12O19/Y3Fe5O12 nanocomposite magnet film with varying soft phase composition has been synthesized and characterized. The addition of soft phase enhanced the magnetic properties and magnetic energy product of the nanocomposite film, with the best performance observed at 10% soft phase composition. The microstructural analysis revealed changes in phase composition, crystallinity, and grain size with increasing soft phase content. The results suggest that the exchange-interaction between soft and hard phase grains contribute to the improved magnetic properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Ahmad Gholizadeh et al.
Summary: Microstructural, magnetic, and dielectric properties of Ca-Sm co-substituted strontium hexaferrites were investigated. The results showed that the co-substitution increased the saturation magnetization and coercive field. Impedance analysis also revealed a decrease in the mobility of charge carriers in the co-substituted samples.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
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Chemistry, Applied
Ram A. Pawar et al.
JOURNAL OF RARE EARTHS
(2023)
Article
Chemistry, Inorganic & Nuclear
Cong Zhang et al.
Summary: In this study, Al3+ ion substituted M-type Sr0.7La0.3Fe11.75.x-AlxCo0.25O19 (0 < x < 0.12) hexagonal ferrites were synthesized by solid state reaction. The lattice parameters a and c decreased with the increasing Al3+ content, and a single M-type strontium ferrite was obtained within the Al content range of 0 to 0.08. Scanning electron microscopy images showed hexagonal platelet-like particles, and the size of the magnetic powders was about 2-5 μm. The saturation magnetization (M-s) of the hexaferrite decreased with the increase of x from 0 to 0.12, while coercivity (H-c) of the magnetic powders increased with Al3+ content (x) from 0 to 0.12.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Ahmad Gholizadeh et al.
Summary: In this study, Sr1-xCaxFe12-xGdxO19 hexaferrites were characterized using various techniques. The results revealed a pure-phase hexaferrite structure with reduced defects and increased particle size. Magnetic investigations showed an increase in coercive force and saturation magnetization, with maximum values observed for sample x=0.16, making it suitable for applications such as permanent magnets and high-density magnetic storage devices. The dielectric parameters, including conductivity and permittivity, were also studied, and impedance analysis suggested that the conduction process is mainly governed by the long-range movement of charge carriers based on the Debye model for sample x=0.12.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
M. Suganya et al.
Summary: In this study, a new type of composite electrode material for supercapacitor applications, made of M-Type cobalt doped barium hexaferrite nanoplatelets (BaCoFe11O19 NPs) and graphitic carbon nitride (g-C3N4), was investigated. The successful formation of the composite material was confirmed by analyses such as XRD, FTIR, TEM, and XPS. The BaCoFe11O19/g-C3N4 composite electrode exhibited a maximum specific capacitance of 314.6 F g-1 at a current density of 0.5 A g-1 and retained 94.3% capacitance after 10,000 charging-discharging cycles. Therefore, the fabricated BaCoFe11O19/g-C3N4 composite electrode shows potential for use as an electrode material in high-performance energy storage systems.
Article
Materials Science, Multidisciplinary
R. Sagayaraj et al.
Summary: Z-type hexaferrites with polycrystalline characteristics were synthesized using co-precipitation method. The XRD results confirmed the polycrystalline phase and 6 nm particle size of the Z-type ferrite nanoparticles. The FTIR spectrum showed resonances corresponding to tetrahedral and octahedral voids and a stabilized ferrite structure. These special ferrite materials exhibited ferrimagnetic properties and high coercivity, making them useful for microwave absorption, high-frequency applications, and magnetic recording media.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Multidisciplinary Sciences
Lutfor Rahman et al.
Summary: M-type strontium hexaferrite (SrM) was synthesized using co-precipitation technique with different sintering temperatures and mole ratios. The synthesized SrM was characterized and its properties were investigated. The structural parameters, particle size, and magnetic properties of the samples were found to vary with calcination temperature and composition. The synthesized SrM showed potential applications in magnetic recording media and photocatalysis due to its low coercivity, high saturation magnetization, and low band gap energy.
Article
Materials Science, Multidisciplinary
Xiaoqiong Wang et al.
Summary: By doping with Sn4+ and Mn2+/Mn3+, the M-type BaFe12-y-2xAlySnxMnxO19 exhibits strong magnetic absorption at specific frequencies.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Physics, Applied
Hodam Karnajit Singh et al.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Indu Sharma et al.
Summary: In this study, BaYxFe12-xO19 was synthesized using citrate precursor technology with x values of 0.0, 0.1, and 0.2. Fourier Transform Infrared and UV spectroscopy, as well as Powder X-ray Diffraction, were used to determine the structure and confirm the phase formation. The magnetization versus magnetic field data showed an increase in magnetization value from 8.77 emu/g to 26.22 emu/g with the increase in doping concentration from x = 0.0-0.20. The antimicrobial activity of Y-doped BaFe12O19 against Staphylococcus aureus and Escherichia coli was observed at all concentrations, with MIC values ranging from 0.55 to 0.80 mg/ml. Therefore, this study explores the potential applications of Y-doped Barium hexaferrites in biomedical applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Somnath Sahu et al.
Summary: Sr-doped nano Ni-Co ferrite (NCFO) materials were synthesized using high-energy ball milling, and the microwave absorption performance of the materials was systematically studied. It was found that the saturation magnetization (Ms) decreased with increasing Sr concentration, except for NCFOS2, which had the highest Ms value of 60 emu/g. The magnetic parameters such as remanent magnetization, coercivity, and anisotropic constant showed a similar trend, increasing up to NCFOS2 and then decreasing. The correlation between lattice strain and magnetic parameters was established, and the electromagnetic wave parameters were recorded in the Ku band. The NCFOS2 material exhibited a maximum reflection loss (RL) of -35.59 dB at 17.74 GHz with a thickness of 3 mm, indicating its promising potential as a microwave absorber.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Physics, Multidisciplinary
Muhammad Ijaz et al.
Summary: The magnetic and structural characteristics of M-type barium hexaferrite nanoparticles can be adjusted by doping different metal ions. This study synthesized BaFe11.5-xAl0.5CoxO19 hexaferrite nanoparticles and investigated the impact of doping levels on their properties. The findings show that doping Cobalt against Aluminium can significantly improve the magnetic characteristics of M-type Barium hexaferrites, making them useful in various magnetic applications.
Article
Materials Science, Ceramics
Evgeny A. Gorbachev et al.
Summary: Double substitution of strontium hexaferrite by calcium and aluminum greatly enhances its hard magnetic properties, but these properties are also closely related to the material microstructure, solid solution inhomogeneity, and aluminum ions distribution. In this study, M-type hexaferrite particles with varying aluminum content were synthesized through a simple method and the effects of annealing temperature on microstructure, crystal structure features, and hard magnetic properties were investigated. The annealing temperature influenced the particle size, chemical composition, and coercivity. The hexaferrites with narrow chemical distribution exhibited resonance absorption in the sub-terahertz band, with the highest NFMR frequency observed at x = 5.5 sample annealed at 1400°C.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Kush Rana et al.
Summary: In this study, a pure M-type strontium hexaferrite has been prepared without high-temperature thermal treatments. The low-temperature sintering process has been investigated for its impact on the structural, spectroscopic, and magnetic properties. The results show an increase in saturation magnetization as the sintering temperature increases. The unique properties of this hexaferrite make it suitable for applications in switching devices, recording media, and high-frequency applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
A. R. Makhdoom et al.
Summary: In this study, M-type hexaferrites with different dopants were synthesized using a conventional solid state reaction technique. The structure, morphologies, and magnetic behavior were examined. The results showed that the saturation magnetization values decreased while the coercivity increased with the incorporation of dopants. The Ba0.6Sr0.4Fe9.5Ce1Al1.5O19 hexaferrite achieved the highest coercivity value.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Applied
Vitalii Alexandrovich Turchenko et al.
Summary: Solid solutions of In3+ doped M-type strontium hexaferrites were synthesized and studied using neutron diffraction analysis. In3+ cations were found to occupy octahedral and tetrahedral positions. The compounds exhibited a frustrated magnetic state and showed specific magnetic and dielectric properties, with the Curie temperature decreasing with increasing doping level.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
M. A. Darwish et al.
Summary: The study demonstrates that tin-substituted hexaferrites can be used for both electromagnetic shielding and absorbing materials, showing potential for absorbing electromagnetic radiation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Muhammad Zahid et al.
Summary: Chromium substituted M-type hexagonal ferrites with varying compositions were successfully prepared via sol gel method. The study investigated the structure, magnetic, and dielectric properties of these ferrites. It was found that increasing chromium concentration led to a decrease in grain size, lattice parameters, and cell volume, an increase in saturation magnetization, and a gradual increase in dielectric constant.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Materials Science, Ceramics
Wanwan Li et al.
Summary: This study synthesized two series of W-and M-type composite hexaferrites using the conventional ceramic method in two different synthesis routes. The influence of M type phase on the structure and magnetic properties of W-type hexaferrites is investigated. The results show that the composite hexaferrites synthesized in the pre-sintering stage have significantly improved coercivity and decreased ΔH value.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Misbah Idrees et al.
Summary: The structural and dielectric properties of Gadolinium substituted U-type hexaferrites were investigated. The samples were synthesized via a Sol-gel auto combustion route and characterized by various spectroscopic techniques. The results suggested that the prepared materials can be used extensively for different Micro-Wave attenuation purposes.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Muhammad Jamshaid et al.
Summary: In this study, Yb-Zn doped nanocrystalline M type hexaferrites were synthesized and their structural, optical, and electric properties were investigated. The results showed that Yb-Zn doping can tune the band gap of the hexaferrites and enhance their photocatalytic performance.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Muhammad Nadeem et al.
Summary: The structural, magnetic, and dielectric properties of Yb ions substituted Ca-hexaferrites synthesized using the citrate sol-gel method were studied. Yb substitution was found to have a significant impact on the magnetic and dielectric properties of the ferrites.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Gara Kishor et al.
Summary: Doping of various ions in M-type BaFe12O19 hexaferrite has been achieved through mechanical alloying and heat treatment, resulting in changes in structural phase, crystallite size, lattice strain, and magnetic moment.
Article
Materials Science, Multidisciplinary
Eun-Soo Lim et al.
Summary: La-Co-Ti substituted Sr-hexaferrite powder-epoxy composites were fabricated for electromagnetic wave absorption. The electromagnetic absorption frequency range can be controlled by varying the substitution x, leading to high EM absorbing performances suitable for X band and millimeter range applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
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Physics, Multidisciplinary
Muhammad Zahid et al.
Summary: In this study, chromium-doped M-type hexaferrites were prepared using sol-gel auto-combustion technique and characterized using XRD and SEM. The results showed that lattice parameters, crystallite size, and cell volume decreased with increasing Cr3+ concentration, while dielectric constant increased gradually. These samples are suitable for high frequency applications.
Article
Physics, Condensed Matter
Meshal Alzaid
Summary: This study focuses on the synthesis of rare earth lanthanum-doped manganese in barium hexaferrite using the coprecipitation method. It was found that increasing the concentration of lanthanum can enhance crystallinity and increase crystallite size, while decreasing the band gap energy. Agglomeration was observed due to heat behavior at 600 degrees C or concentration effect. Structural studies were carried out using X-ray diffraction, UV, FT-IR, and SEM techniques.
ADVANCES IN CONDENSED MATTER PHYSICS
(2021)
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Chemistry, Physical
Haifeng Li et al.
Summary: The BaFe12-2x(Mn0.5Co0.5Ti)(x)O19 powders synthesized through solid-state reaction technique showed broadened microwave absorption bandwidth due to multiple magnetic resonances. The substitution of elements led to improved microwave absorption properties, making BaFe11(Mn0.5Co0.5Ti)(0.5)O-19 a desirable candidate for electromagnetic wave absorber applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Materials Science, Multidisciplinary
Shalom Ann Mathews et al.
Summary: M-type hexaferrite is highly regarded for its large magneto-crystalline anisotropic energy, exceptional chemical stability, corrosion resistance, high Curie temperature, and high coercivity. This review paper focuses on examining the microwave absorption properties and related studies of materials based on M-type hexaferrite, discussing their performance in various microwave bands and emphasizing the complementarity between magnetic loss and dielectric loss for effective microwave absorption. The article elaborates on the mechanisms of microwave absorption in different morphologies and structural adaptations of hexaferrite, as well as outlining current trends and future perspectives of these materials.
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