Large magnetoelectric effect in BaFe12O19-(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 particulate composite

Liu, Sheng; Gao, Pingping; Zou, Hong‐Xiang; Qin, Bo; He, Jun; Deng, Lianwen

doi:10.1016/j.apmate.2021.12.001

Cited by 10 publications

(4 citation statements)

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Section: Introductionmentioning

confidence: 99%

“…However, the narrow absorption band, weak absorption capability, and high density of single ferrite have greatly constrained its applications. [13,14] The previous works mainly focused on doping of barium ferrite with transition ions and rare-earth element to broaden the bandwidth and enhance microwave absorption intensity. [15][16][17][18] Li et al synthesized the Co 2+ -Ti 4+ co-doped Ba(CoTi) 1.4 Fe 9.2 O 19 nanoparticles, the minimum reflection loss reached −52.36 dB at 8.44 GHz with a thickness of 4.64 mm.…”

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confidence: 99%

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The Ordered Mesoporous Barium Ferrite Compounded with Nitrogen‐Doped Reduced Graphene Oxide for Microwave Absorption Materials

Zhao

Cao

et al. 2023

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Nanocomposites with hierarchical pore structure hold great potentials for applications in the field of microwave‐absorbing materials because of their lightweight and high‐efficiency absorption properties. Herein, M‐type barium ferrite (BaM) with ordered mesoporous structure (M‐BaM) is prepared via a sol–gel process enhanced by mixed anionic and cationic surfactants. The surface area of M‐BaM is enhanced almost ten times compared with BaM together with 40% reflection loss enhancing. Then M‐BaM compounded with nitrogen‐doped reduced graphene oxide (MBG) is synthesized via hydrothermal reaction in which the reduction and nitrogen doping of graphene oxide (GO) in situ occur simultaneously. Interestingly, the mesoporous structure is able to provide opportunity for reductant to enter the bulk M‐BaM reducing its Fe3+ to Fe2+ and further forms Fe3O4. It requires an optimal balance among the remained mesopores in MBG, formed Fe3O4, and CN in nitrogen‐doped graphene (N‐RGO) for optimizing impedance matching and greatly increasing multiple reflections/interfacial polarization. MBG‐2 (GO:M‐BaM = 1:10) achieves the minimum reflection loss of −62.6 dB with an effective bandwidth of 4.2 GHz at an ultra‐thin thickness of 1.4 mm. In addition, the marriage of mesoporous structure of M‐BaM and light mass of graphene reduces the density of MBG.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

The Ordered Mesoporous Barium Ferrite Compounded with Nitrogen‐Doped Reduced Graphene Oxide for Microwave Absorption Materials

Zhao

Cao

et al. 2023

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“…PbZrTiO 3 , BaTiO 3 , BaSrTiO 3 , NaBiTiO 3 , (BaCa)(ZrTi)O 3 , and SrBaNb 2 O 6 have been extensively used as piezoelectric phases in these multiferroic composites. [20,[22][23][24] CoFe 2 O 4 , NiFe 2 O 4 , NiZnFe 2 O 4 , ZnFe 2 O 4 , and LaCaMnO 3 are some of the most suitable choices for the magnetic phase in the multiferroic composites. [25,26] The important criterion is to choose a good piezoelectric and good magnetostrictive material for making a multiferroic composite.…”

Section: Introductionmentioning

confidence: 99%

Crystal Structure, Magnetic, and Dielectric Properties of (x)CoFe₂O₄–(1−x)Ba_0.8Sr_0.2TiO₃ Multiferroics

Shukla

Mallick

Kumari

et al. 2023

Physica Status Solidi (b)

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The composites (x)CoFe2O4‐(1‐x)Ba0.8Sr0.2TiO3 were prepared by solid state reaction method using microwave double‐step sintering. Ba0.8Sr0.2TiO3 crystalized to tetragonal crystal symmetry with P4mm space group and, CoFe2O4 crystalized to cubic crystal symmetry with F d3̅𝑚 space group. Electron microscopy techniques were used to understand the microstructure, elemental composition, and morphology of the composites. The dielectric properties were measured in the 1Hz‐1MHz frequency range and, 400C‐4000C temperature range. Composite with × = 0.1 (ε’∽170, tan δ=0.08 at 1kHz) and 0.2 (ε’∽390, tan δ=0.07 at 1 kHz) have better dielectric properties than the parent Ba0.8Sr0.2TiO3 ferroelectric (ε’∽125, tan δ=0.16 at 1kHz) and CoFe2O4 ferrimagnetic phases (ε’∽375, tan δ=0.72 at 1kHz), respectively. Composite with 10% cobalt ferrite has the highest saturation polarization (2.1 μC/cm2), highest remanent polarization (0.9 μC/cm2), and coercive field (23.9 kV/cm) compared to ferroelectric phase followed by × = 0.2 composite (P S = 1.6 μC/cm2, P r = 0.8 μC/cm2 & E C = 19.2 kV/cm). Composite with × = 0.2 show the highest magnetic coercive field of 1.96 kOe. Hence, this article advocates that 20% ferrite in the composites is the optimized composition for multiferroic applications. The present study will help explore piezoelectric, magnetostrictive, and magnetoelectric properties of (x)CoFe2O4‐(1‐x)Ba0.8Sr0.2TiO3 for the technological application.This article is protected by copyright. All rights reserved.

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“…Similarly, combining hexaferrites with other magnetic or non-magnetic materials can lead to synergistic effects, such as improved magnetic response, enhanced thermal stability, or increased electrical conductivity. 15,16 Depending on the specific composite design, several additives like TiO 2 , SiO 2 , BaTiO 3 , Co 2 Z, RGO and spinel ferrites (MFe 2 O 4 ) are used to make the composites. 17,18 Recently, it was observed that barium ferrite/SiO 2 nanocomposites exhibit high coercivity (H C ) compared to pristine sample values and excellent dispersion within the ceramic matrix.…”

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confidence: 99%

Tunable Magnetic and Dielectric Properties of BaMg_0.4Al_0.4Fe_11.2O₁₉ and SiO₂ Composites for High-Frequency Applications

Ramesh,

Ashok,

Usha

et al. 2024

ECS J. Solid State Sci. Technol.

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This study focuses on the synthesis and characterization of Mg and Al co-doped M-type Barium hexaferrite (BaMg0.4Al0.4Fe11.2O19) powder via the sol-gel method. Structural analysis using X-ray diffraction (XRD) and Fourier transformation infrared spectroscopy (FTIR) confirmed the single-phase structure of the synthesized powder. Morphological properties were examined through field emission scanning electron microscopy (FESEM), revealing hexagonal particle morphology with an average size of approximately 60 nm for BaMg0.4Al0.4Fe11.2O19. To fabricate composites, commercially purchased SiO2 was used to prepare the composites of (1–x) BaMg0.4Al0.4Fe11.2O19+ (x) SiO2 {where x = 0.0, 0.1, 0.3, 0.5 and 0.7). The composites were prepared using the mixing method followed by microwave sintered at 1000°C/90 min. FESEM and energy-dispersive X-ray spectroscopy (EDS) were employed to analyze the morphology and elemental composition of the composites. The composites ' frequency-dependent complex permittivity was measured over 300 kHz to 3 GHz. Magnetic hysteresis (M-H) loops were used to analyze the magnetic properties of composite samples. A reduction in magnetic saturation was observed with increasing SiO2 concentration, while there was a slight increase in coercivity for the composite samples compared to pure hexaferrite. Coercivity remained relatively unchanged with varying SiO2 concentrations in the composites.

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Large magnetoelectric effect in BaFe12O19-(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 particulate composite

Cited by 10 publications

References 50 publications

The Ordered Mesoporous Barium Ferrite Compounded with Nitrogen‐Doped Reduced Graphene Oxide for Microwave Absorption Materials

The Ordered Mesoporous Barium Ferrite Compounded with Nitrogen‐Doped Reduced Graphene Oxide for Microwave Absorption Materials

Crystal Structure, Magnetic, and Dielectric Properties of (x)CoFe₂O₄–(1−x)Ba_0.8Sr_0.2TiO₃ Multiferroics

Tunable Magnetic and Dielectric Properties of BaMg_0.4Al_0.4Fe_11.2O₁₉ and SiO₂ Composites for High-Frequency Applications

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Large magnetoelectric effect in BaFe12O19-(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 particulate composite

Cited by 10 publications

References 50 publications

The Ordered Mesoporous Barium Ferrite Compounded with Nitrogen‐Doped Reduced Graphene Oxide for Microwave Absorption Materials

The Ordered Mesoporous Barium Ferrite Compounded with Nitrogen‐Doped Reduced Graphene Oxide for Microwave Absorption Materials

Crystal Structure, Magnetic, and Dielectric Properties of (x)CoFe2O4–(1−x)Ba0.8Sr0.2TiO3 Multiferroics

Tunable Magnetic and Dielectric Properties of BaMg0.4Al0.4Fe11.2O19 and SiO2 Composites for High-Frequency Applications

Contact Info

Product

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Crystal Structure, Magnetic, and Dielectric Properties of (x)CoFe₂O₄–(1−x)Ba_0.8Sr_0.2TiO₃ Multiferroics

Tunable Magnetic and Dielectric Properties of BaMg_0.4Al_0.4Fe_11.2O₁₉ and SiO₂ Composites for High-Frequency Applications