Studies of amorphous soft magnetic materials with extra low core loss at high frequency

1982 ◽  
Vol 53 (11) ◽  
pp. 7825-7827 ◽  
Author(s):  
Wu‐Shin Chang ◽  
Yung‐chu Han
Keyword(s):  
Magnetic Materials ◽  
High Frequency ◽  
Core Loss ◽  
Soft Magnetic Materials ◽  
Soft Magnetic

Loss Separation Model: A Tool for Improvement of Soft Magnetic Materials

2016 ◽  
Vol 869 ◽  
pp. 596-601 ◽  
Author(s):  
Marcos Flavio de Campos
Keyword(s):  
Magnetic Material ◽  
Magnetic Materials ◽  
High Frequency ◽  
Eddy Currents ◽  
Soft Magnetic Materials ◽  
Barkhausen Noise ◽  
Magnetic Barkhausen Noise ◽  
Soft Magnetic ◽  
Physical Reasoning ◽  
Separation Model

Loss separation has fundamental importance for optimizing the magnetic material for a given frequency of operation. The loss separation model assumes the existence of two main terms: one due to the hysteresis at the quasi-static situation with frequency less than 0.01 Hz and another dynamic, due to high frequency eddy currents. In this study, it is discussed the physical reasoning behind the loss separation model. Magnetic Barkhausen Noise can be a valuable tool for better understanding the physics of loss separation.

scholarly journals Advances in Powder Metallurgy Soft Magnetic Composite Materials

2017 ◽  
Vol 62 (2) ◽  
pp. 1149-1154 ◽  
Author(s):  
R. Bureš ◽  
M. Strečková ◽  
M. Fáberová ◽  
P. Kollár ◽  
J. Füzer
Keyword(s):  
Powder Metallurgy ◽  
Magnetic Materials ◽  
Automotive Industry ◽  
Core Loss ◽  
Soft Magnetic Materials ◽  
Magnetic Composite ◽  
Transportation Industry ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
High Frequency Region

Abstract Powder metallurgy has grown with the expansion of various industry. Automotive industry had the most strong influence. Today, more than 90% of PM products are used in the transportation industry. Development of new materials such as magnetic materials is expected to meet the new trends of automotive industry, electric and hybrid vehicles. Soft magnetic composites (SMC) are PM materials based on ferromagnetic powder particles covered by electric insulation layer. Concept of SMC’s and PM technologies offer possibility to become faster, use higher frequencies, become smaller and denser, save more energy, achieving high permeability and lower core loss in high frequency region, which is required for soft magnetic materials. Investigation of correlations among compaction parameters, inner structure, magnetic and mechanical properties are presented.

scholarly journals Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7745
Author(s):  
Lucian-Gabriel Petrescu ◽  
Maria-Catalina Petrescu ◽  
Emil Cazacu ◽  
Catalin-Daniel Constantinescu
Keyword(s):  
High Frequency ◽  
Core Loss ◽  
Magnetic Core ◽  
Soft Magnetic Materials ◽  
Magnetic Flux Density ◽  
Nominal Composition ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy ◽  
Electromagnetic Devices

Soft magnetic materials are at the core of electromagnetic devices. Planar transformers are essential pieces of equipment working at high frequency. Usually, their magnetic core is made of various types of ferrites or iron-based alloys. An upcoming alternative might be the replacement the ferrites with FINEMET-type alloys, of nominal composition of Fe73.5Si13.5B9Cu3Nb1 (at. %). FINEMET is a nanocrystalline material exhibiting excellent magnetic properties at high frequencies, a soft magnetic alloy that has been in the focus of interest in the last years thanks to its high saturation magnetization, high permeability, and low core loss. Here, we present and discuss the measured and modelled properties of this material. Owing to the limits of the experimental set-up, an estimate of the total magnetic losses within this magnetic material is made, for values greater than the measurement limits of the magnetic flux density and frequency, with reasonable results for potential applications of FINMET-type alloys and thin films in high frequency planar transformer cores.

scholarly journals Soft Magnetic Materials in High-Frequency, High-Power Conversion Applications

JOM ◽  
2012 ◽  
Vol 64 (7) ◽  
pp. 772-781 ◽  
Author(s):  
Alex M. Leary ◽  
Paul R. Ohodnicki ◽  
Michael E. McHenry
Keyword(s):  
Magnetic Materials ◽  
High Power ◽  
High Frequency ◽  
Power Conversion ◽  
Soft Magnetic Materials ◽  
Soft Magnetic

Fe-P Soft Magnetic Properties of Iron for A.C. Applications

2012 ◽  
Vol 585 ◽  
pp. 289-293
Author(s):  
S.K. Chaurasia ◽  
Ujjwal Prakash ◽  
P.S. Misra ◽  
K. Chandra
Keyword(s):  
Magnetic Material ◽  
Magnetic Properties ◽  
Magnetic Materials ◽  
High Frequency ◽  
Eddy Current Loss ◽  
Soft Magnetic Materials ◽  
Soft Magnetic Properties ◽  
Wide Spread ◽  
Soft Magnetic ◽  
Final Density

Silicon steels and ferrites dominate soft magnetic materials. However, Soft magnetic materials using powder metallurgical techniques are gaining wide spread use in motor, compressors and other rotating devices. High-density Fe-P soft magnetic materials have been developed using hot powder forging route. It was observed that phosphorous addition (ranging from 0.30P-0.80P) enhances the soft magnetic properties of iron for AC applications. This new soft magnetic material offers many manufacturing advantages. Because of its low eddy current loss, it has good high frequency magnetic properties comparable to other soft magnetic materials. Also, it has been observed that phosphorous addition improves the final density of the resulting product.

Sign in / Sign up

Export Citation Format

Share Document