Journal ArticleDOI
Grain Boundary Demagnetizing Fields in 3% Si–Fe
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TLDR
Using the Kerr magneto-optic effect, domain structure was observed during dc and 60Hz magnetization in 3% Si-Fe bi-crystals and commercial samples with (100) [001] grain orientation as mentioned in this paper.Abstract:
Using the Kerr magneto‐optic effect, domain structure was observed during dc and 60‐Hz magnetization in 3% Si–Fe bi‐crystals and commercial samples with (100) [001] grain orientation. High‐speed movies were taken at 3600 frames/sec using a stroboscopic light source. A significant influence of grain boundary demagnetizing fields on domain structure was found. Reverse spikes and complex V‐line structures were observed which reduced the normal component of magnetization at grain boundaries. These structures did not appear in the demagnetized state and occurred only when the sample was magnetized.read more
Citations
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Magnetic properties and domain structure in grain-oriented 3% Si-Fe
J. Shilling,G. Houze +1 more
TL;DR: In this article, both static and dynamic domain structures are shown and used to illustrate the relationships among domain structure, metallurgical structure, and magnetic properties, and core losses are shown to depend on the domain wall spacing and mobility, which in turn are controlled by grain size, stress, and defect structure.
Journal ArticleDOI
Past, present, and future of soft magnetic composites
TL;DR: In this article, a multidisciplinary approach addressing underlying physics responsible for their magnetic performance, limitations, and future trends is presented, with a focus on soft magnetic composites and their applications in sensing, energy generation, and conversion.
Journal ArticleDOI
Magnetic properties of decarburized steels: An investigation of the effects of grain size and carbon content
TL;DR: In this paper, the magnetic properties of several specimens of steel in which the carbon content has been deliberately reduced are investigated so that the more subtle effects on magnetic properties caused by these other factors can be determined.
Journal ArticleDOI
Relation between residual stress and Barkhausen noise in a duplex steel
Mari Lindgren,Toivo Lepistö +1 more
TL;DR: In this paper, the relation between residual stress and Barkhausen noise (BN) was evaluated in a duplex stainless steel, where the residual stresses had been created to the test piece by local heating.
Journal ArticleDOI
Domain Structure During Magnetization of Grain-Oriented 3% Si-Fe as a Function of Applied Tensile Stress
TL;DR: In this article, the longitudinal Kerr effect has been used to observed domain structure during dc and 60Hz magnetization in conventional (110) grain oriented 3% Si-Fe as a function of applied tensile stress parallel to the rolling direction.
References
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Journal ArticleDOI
A Theory of Domain Creation and Coercive Force in Polycrystalline Ferromagnetics
TL;DR: Granular inclusions, grain boundaries, lamellar precipitates, and the crystalline surface have been examined as possible nucleation centers for domains of reverse magnetization in ferromagnetic materials as discussed by the authors.
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Domain‐Wall Motion in Grain‐Oriented Silicon Steel in Cyclic Magnetic Fields
TL;DR: In this paper, the magneto-optical Kerr effect was employed to obtain a visible contrast between antiparallel domains, and the effects of peak induction, waveform and frequency on domain-wall motion were observed.
Journal ArticleDOI
Magnetization Curves for Ferromagnetic Single Crystals
H. Lawton,K. H. Stewart +1 more
TL;DR: In this paper, the magnetization curves for iron single crystals above the knee are derived on the basis of domain theory for the case where the specimen is finite and the field is applied in an arbitrary direction with respect to the crystal axes.
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Domain Configurations and Crystallographic Orientation in Grain‐Oriented Silicon Steel
W. S. Paxton,T. G. Nilan +1 more
TL;DR: The magnetic domain structure of polycrystalline grain-oriented 3¼% silicon steel has been investigated by the magnetic powder pattern technique and the orientation of individual grains determined by the etchpit optical-goniometer technique as mentioned in this paper.
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Electron Mirror Microscopy of Magnetic Stray Fields on Grain Boundaries
TL;DR: In this article, electron mirror microscopy was used for direct visual observation of magnetic stray fields at grain boundaries in magnetic materials, and the results showed that grain boundaries behave quite differently stray field-wise.