Power losses of soft magnetic composite materials under two-dimensional excitation

Zhu, Jun; Zhong, Jiaxin; Ramsden, V.S.; Guo, Youguang

doi:10.1063/1.369798

Cited by 26 publications

(28 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Normally the materials are characterized using conventional magnetization method. Such method can only measure the average properties over the whole volume of a sample [10], [11] and cannot provide local magnetization process. This paper presents the visualized local magnetization process by means of magnetooptical imaging (MOI) technique.…”

Section: Anocrystalline Magnetic Materials Fementioning

confidence: 99%

Flux Distribution at the Cross Section of Stacked Nanostructured Magnetic Ribbon

et al. 2009

View full text Add to dashboard Cite

Conventional magnetization methods only measure the average magnetic properties over the whole sample. The information is insufficient to understand the local character. This paper presents the visualized magnetization process and its profiles in detail at the cross section of the FINEMET ribbon using advanced magnetooptical imaging technique. External magnetic fields were applied parallel to the surface of the ribbon. A magnetization curve was plotted by interpreting the profile of intensity of magnetooptical images. The profile indicates that the flux densities are higher at the cross section of the ribbons compared with those at the gaps between the ribbons. The flux lines mainly transmit inside the FINEMET ribbons though there are some stray fields between the ribbons. Index Terms-Magnetic field measurement, soft magnetic materials.

show abstract

Section: Anocrystalline Magnetic Materials Fementioning

confidence: 99%

Flux Distribution at the Cross Section of Stacked Nanostructured Magnetic Ribbon

et al. 2009

View full text Add to dashboard Cite

show abstract

“…3 In addition, scientists are also interested in the magnetic flux distribution in order to understand magnetization processes and to interpret intrinsic and extrinsic magnetic properties. [4][5][6] Conventional magnetization methods only measure the average properties over the whole volume of the sample 7,8 and cannot provide information of the local magnetization process in detail. This paper presents a method of magneto-optical imaging ͑MOI͒ technique to visualize the magnetic field distribution in the sample and to directly observe the magnetization process.…”

Section: Introductionmentioning

confidence: 99%

Visualization of magnetization processes of soft magnetic composites by the magneto-optical imaging technique

Lin

Zhu

Zhong

et al. 2007

Journal of Applied Physics

View full text Add to dashboard Cite

Attractive features of soft magnetic composites (SMCs) are high resistivity, isotropic three-dimensional flux behavior, and easy compression into the complicated shapes required in electromagnetic devices. Comprehensive understanding of the materials will help optimize design of electromagnetic devices. This paper presents the magnetization processes in a SMC sample in micron scale by means of the magneto-optical imaging technique. The sample was magnetized by magnetic fields tangential or perpendicular to the observation surface. It is observed that the flux density is higher at the particle region but lower at the interparticle space. When a tangential field is applied, the stray fields change polarization at the particle boundaries. Both results suggest that the magnetized sample behaves as a collection of individual magnetized particles rather than as a uniform and continuous magnetic substance such as soft iron although there are some interactions between neighboring particles.

show abstract

“…However, there are very few experiments investigating three-dimensional ͑3D͒ characteristics of soft magnetic materials, though great efforts have been made to study one-and two-dimensional magnetic properties. [1][2][3][4] This paper studies 3D experimental results of time-varying magnetic flux density vector B loci and magnetic field strength vector H loci, and the power losses when the B loci are controlled to become circles with increasing amplitudes and ellipses evolving from a straight line into a circle in three orthogonal planes, respectively.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional hysteresis of soft magnetic composite

Lin

Zhu

Guo

et al. 2006

Journal of Applied Physics

Self Cite

View full text Add to dashboard Cite

Hysteresis phenomenon is one of the important characteristics of soft magnetic materials. A three-dimensional ͑3D͒ magnetic property measurement system has been developed. This system can effectively control the locus of the time-varying magnetic flux density vector B and measure the corresponding magnetic field strength vector H in a cubic sample of soft magnetic material. The sample involved in this study is a soft magnetic composite sample made of highly pure iron powder. This paper investigates the B and H loci in 3D space and the power loss when the B loci are controlled to become circles and ellipses lying in three orthogonal planes. It is found that the B and H loci lie in the same magnetization plane, but the H loci and losses depend strongly on the orientation, position, and process of magnetization. On the other hand, the H vectors evolve into a unique locus pattern, and the power losses approach a unique value when the B vectors evolve into the same loci through either a series of small circles or ellipses.

show abstract

Power losses of soft magnetic composite materials under two-dimensional excitation

Cited by 26 publications

References 3 publications

Flux Distribution at the Cross Section of Stacked Nanostructured Magnetic Ribbon

Flux Distribution at the Cross Section of Stacked Nanostructured Magnetic Ribbon

Visualization of magnetization processes of soft magnetic composites by the magneto-optical imaging technique

Three-dimensional hysteresis of soft magnetic composite

Contact Info

Product

Resources

About