Core-shell structured Mn-Zn-Fe ferrite/Fe-Si-Cr particles for magnetic composite cores with low loss

Mori, Satoshi; Mitsuoka, Takeshi; Sugimura, Kanako; Hirayama, Ryosuke; Sonehara, Makoto; Sato, Toshiro; Matsushita, Nobuhiro

doi:10.1016/j.apt.2018.03.012

Cited by 46 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…d) Real permeability ( µ ʹ) versus the maximum frequency of stable µ ʹ for the SMCs of Solid‐CS‐500 at x = 1.0 wt% with comparison to the reported SMCs systems. [ 11–13,16,18,37–45 ] e) The maximum quality factor ( Q max ) and corresponding frequency for the cold sintered SMCs from the FeCuNbSiB@solid particles for addition contents of x = 1.0–6.0 wt% (this work) with comparison to the conventional SMCs. [ 12,14,38,39,46–48 ] The performance of SMCs with or without a 500 °C annealing is included.…”

Section: Resultsmentioning

confidence: 99%

“…At x = 1.0 wt%, all samples show a low P cv except for Gel-CS ( Figure S12, Supporting Information). An annealing process reduces P cv of SMCs cold sintered from FeCuNbSiB@gel or FeCuNbSiB@solid particles due to the [11][12][13]16,18,[37][38][39][40][41][42][43][44][45] e) The maximum quality factor (Q max ) and corresponding frequency for the cold sintered SMCs from the FeCuNbSiB@solid particles for addition contents of x = 1.0-6.0 wt% (this work) with comparison to the conventional SMCs. [12,14,38,39,[46][47][48] The performance of SMCs with or without a 500 °C annealing is included.…”

Section: Wwwadvelectronicmatdementioning

confidence: 99%

See 1 more Smart Citation

Cold Sintered Metal–Ceramic Nanocomposites for High‐Frequency Inductors

Zhou

Liu

Cao

et al. 2020

Adv Elect Materials

View full text Add to dashboard Cite

Power electronics, including those inspired by 5G and 6G revolutions, have escalated the demand for miniaturized energy‐efficient inductor components with higher power density, higher operating frequencies, and smaller device sizes. Recently, cold sintering has proved to be a powerful tool for fabricating ceramics. Here, novel metal–ceramic nanocomposites are prepared by cold sintering for the first time. As a model system, Fe‐based nanocrytalline alloys with NiZn ferrites and α‐Fe2O3 ceramics are cold sintered at 150 °C under a uniaxial pressure of 320 MPa. These nanocomposites illustrate dense microstructures, fine grains, and high electrical resistivities, allowing remarkable high‐frequency performance, such as permeability values of ≈11.5 at frequencies up to ≈1 GHz with corresponding quality factors reaching over 100 at tens of megahertz. The power inductors using the developed composite materials demonstrate low DC resistance (18.35 mΩ), high efficiency (≈98.2%), and high current rating with small form factors far superior to those available as commercial products. The results presented here indicate a dramatic advance in the materials science and development of inductor composite materials for power electronics applications. This synthesis route of metal–ceramic composites shows great potential in fabrication of new composite materials that are targeted for functional components.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Wwwadvelectronicmatdementioning

confidence: 99%

Cold Sintered Metal–Ceramic Nanocomposites for High‐Frequency Inductors

Zhou

Liu

Cao

et al. 2020

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…5 Silica-coated iron nickel particles with a core−shell structure (i.e., FeNi@SiO 2 particles) have highly desirable properties for their potential applications as inductors in electronic devices. 6,14,15 First, the SiO 2 shell provides a protective barrier around the FeNi core, enhancing the stability and durability of the particles. It helps prevent oxidation and corrosion of the FeNi material, ensuring the long-term performance of the inductor.…”

Section: ■ Introductionmentioning

confidence: 99%

Synthesis of Submicron-Sized Spherical Silica-Coated Iron Nickel Particles with Adjustable Shell Thickness via Swirler Connector-Assisted Spray Pyrolysis

Ratnasari,

Septiani,

Cao

et al. 2023

Langmuir

View full text Add to dashboard Cite

Silica-coated iron nickel (FeNi@SiO2) particles have attracted significant attention because of their potential applications in electronic devices. In this work, submicron-sized spherical FeNi@SiO2 particles with precisely controllable shell thickness were successfully synthesized for the first time using a swirler connector-assisted spray pyrolysis system, comprising a preheater, specific connector, and main heater. The results indicated that the thickness of the SiO2 shell can be tuned from 3 to 23 nm by adjusting the parameter conditions (i.e., preheater temperature, SiO2 supplied amount). Furthermore, our fabrication method consistently yielded a high coating ratio of more than 94%, indicating an excellent quality of the synthesized particles. Especially, to gain an in-depth understanding of the particle formation process of the FeNi@SiO2 particles, a plausible mechanism was also investigated. These findings highlight the importance of controlling the preheater and SiO2 supplied amount to obtain FeNi@SiO2 particles with desirable morphology and high coating quality.

show abstract

“…The realization of maglev technology 13,14 and the rapid development of ferrite soft magnetic materials [15][16][17] provide a new research idea to solve the problem of the slip of the inspection robot. In this article, the energized coil is appropriately arranged around the high-voltage line that offers the annular magnetic field, which is enhanced by the soft magnetic material, and then, the ampere force is received by the energized coil, therefore, the ampere force is used to drive the inspection robot during the inspection processing.…”

Section: Introductionmentioning

confidence: 99%

Magnetic linear driving method for high-voltage direct current inspection robot

Chen

Yang

et al. 2020

International Journal of Advanced Robotic Systems

View full text Add to dashboard Cite

Faced with the problem of frequent slippage of the wheel-arm inspection robot in overhead high-voltage transmission lines, a magnetic linear drive method, based on high-voltage direct current (HVDC) magnetic field, is proposed: The ampere force of an enhanced HVDC magnetic field, generated by an innovatively arranged current-carrying coil, is used as the driving force for the traction robot, replacing the traditional wheel-arm driving method, thereby eliminating the slip. A physical model for the magnetic driving force is established, according to the characteristics of the magnetic field around the HVDC transmission line and the driving force requirements of the robot. The relationship between the magnetic driving force, the physical model size, and the number of coil windings is analyzed. The magnetic drive model is simulated using the COMSOL software version is 5.0. The simulation results of the magnetic drive force model are compared to theoretical calculations, proving the proposed method as correct. The magnetic drive device is constructed according to the proposed magnetic drive model and experiments are carried out. The results show that the magnetic drive device can provide enough traction to drive the robot motion, proving that the proposed magnetic linear drive method is technically feasible.

show abstract

Core-shell structured Mn-Zn-Fe ferrite/Fe-Si-Cr particles for magnetic composite cores with low loss

Cited by 46 publications

References 29 publications

Cold Sintered Metal–Ceramic Nanocomposites for High‐Frequency Inductors

Cold Sintered Metal–Ceramic Nanocomposites for High‐Frequency Inductors

Synthesis of Submicron-Sized Spherical Silica-Coated Iron Nickel Particles with Adjustable Shell Thickness via Swirler Connector-Assisted Spray Pyrolysis

Magnetic linear driving method for high-voltage direct current inspection robot

Contact Info

Product

Resources

About