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Formula for Energy Loss in Soft Magnetic Materials and Scaling

100%
Sokalski K., Szczygłowski J.
Acta Physica Polonica A
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2009
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vol. 115
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issue 5
920-924
EN
Basing on scale invariance of considered system an improvement of the Bertotti formula for energy loss in soft magnetic materials has been achieved. Assumptions of the Bertotti theory were discussed and criticized. As an alternative to this theory a new approach basing on the scale invariance of complex systems has been presented. The generalized description of energy loss has been recently postulated by us in the form of the homogeneous function in a general sense which leads to a series expansion for the energy loss. On the basis of measurement data it has been proved that only two first terms of the series are relevant. New measurements of the energy loss in soft magnetic materials have been performed which confirms the scaling theory. The obtained formula enables very simple description of the energy loss in soft magnetic materials, taking into considerations wide ranges of frequency and magnetic induction. The revealed data collapse of energy loss enables comparison of energy losses data taken by different methods. This phenomenon also supplies new criterion for correctness of empirical data.
2
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Data Collapse of Energy Loss in Soft Magnetic Materials as a Way for Testing Measurement Set

100%
Sokalski K., Szczygłowski J.
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2010
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vol. 117
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issue 3
497-499
EN
Basing on the data collapse of the energy loss in soft magnetic materials, we propose a dimensionless measure of measurement set's uncertainty. The derived measure enables to compare uncertainty of different measurement sets and comparison of measurement data.
3
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Determination Of Power Loss In Fe-Based Soft Magnetic Composites

81%
Jankowski B., Kapelski D., Ślusarek B., Szczygłowski J.
Archives of Metallurgy and Materials
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2015
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issue 2
4
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Minor Loops in the Harrison Model

81%
Chwastek K., Szczygłowski J., Wilczyński W.
Acta Physica Polonica A
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2012
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vol. 121
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issue 4
941-944
EN
A novel description of hysteresis phenomenon is presented. The examined description emphasizes the roles of bistability and quantum phenomena as processes responsible for hysteresis loop formation in magnetic materials. Major and symmetric minor hysteresis loops are modelled in chosen soft magnetic materials using the Harrison model. A reasonable agreement between theory and experiment is achieved.
5
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Modelling Hysteresis Loops in Fe-Based Soft Magnetic Composites Using Takács Description

81%
Jankowski B., Ślusarek B., Szczygłowski J., Chwastek K.
Acta Physica Polonica A
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2015
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vol. 128
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issue 1
116-119
EN
The measurements and modeling of hysteresis loops of soft magnetic composites made of powder with different particle sizes and different densities were investigated. The Takács description that is based on hyperbolic tangent transformation has been applied in the consideration. The paper shows recorded hysteresis loops with the maximum flux density of 1.2 T.
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