Results 241 to 250 of about 10,149 (276)

Analysis of Alternating Field Demagnetization Equipment

2013
Summary Although partial demagnetization is an effective means of selectively removing soft unstable magnetization from igneous rock specimens, leaving the more stable thermoremanent magnetization relatively unaffected, the process may also add a spurious component of magnetization to the specimen, which in some cases, is sufficient to obscure the ...
RICHARD R. DOELL, ALLAN COX
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Demagnetization field of ferromagnetic equilateral triangular prisms

Physica B: Condensed Matter, 2005
An analytic expression is obtained for the point-function demagnetization tensor of the uniformly magnetized equilateral triangular prism element. This result can be used to improve the precision in 3D finite element micromagnetic models, especially for complex boundary geometric shapes.
K. Tang, H.W. Zhang, Q.Y. Wen, Z.Y. Zhong   +3 more
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Design of coils for alternating field demagnetization

Journal of Geophysical Research: Solid Earth, 1982
In alternating field demagnetizers, it is required that as large a uniform magnetic field as possible be produced at the sample space by using a given power supply. To calculate the strength of the magnetic field inside alternating field coils to any desired accuracy, a computer oriented algorithm is developed.
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On the computation of particle demagnetizing fields

IEEE Transactions on Magnetics, 1989
The nonuniform demagnetizing fields of a magnetic particle are computed. It is shown that the dipole-dipole approximation introduces large errors only for the nearest neighboring elements, and they can be corrected by numerical integration over the surface charge of each element.
Y.D. Yan, E. Della Torre
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Effects of External Field Orientation on Permanent Magnet Demagnetization

IEEE Transactions on Industry Applications, 2016
This paper investigates how the orientation of the applied demagnetizing magnetomotive force (MMF) affects the demagnetization behavior of Nd-Fe-B magnets that are widely used for permanent-magnet synchronous machines (PMSMs). This paper designs and builds a customized test fixture that can produce a magnetic field with varying orientation and ...
Peng Peng, Han Xiong, Julia Zhang, Wanfeng Li, Franco Leonardi, Chuanbing Rong, Michael W. Degner, Feng Liang, Leyi Zhu   +8 more
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The demagnetizing field inside a domain wall

Journal of Magnetism and Magnetic Materials, 1995
Abstract A rigorous calculation of the demagnetizing field inside a 180° domain wall, of arbitrary shape and internal structure, is proposed, using the method of equivalent currents. All contributions to the field, arising from charges which would lie on the sample surfaces and on the wall surface, are treated on the same footing.
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An Adaptive Finite Element Solver for Demagnetization Field Calculation

Advances in Applied Mathematics and Mechanics, 2019
Summary: Quality calculation of the demagnetization field plays an important role in the computational micromagnetics. It is a nontrivial challenge to develop a robust and efficient algorithm to handle the requirements from the practical simulations, since the nonlocality of the demagnetization field evaluation and the irregularity of the computational
Yang, Lei, Hu, Guanghui
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Experimental determination of demagnetization field in perpendicular media

Digest of INTERMAG 2003. International Magnetics Conference (Cat. No.03CH37401), 2004
In this paper, the demagnetization field is determined from a spin-stand technique. However, we have found that the theoretical models cannot be accurately applied to perpendicular media. Therefore a new analysis is introduced and the results are compared with analytical calculations.
A. Sunder, H. Zhou, D.C. Karns
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Indirect detection via the dipolar demagnetizing field

Journal of Magnetic Resonance (1969), 1992
Abstract A new method for indirectly detecting the magnetization of one spin species via the NMR signal of a second species is described. This method, which does not require that the spins of the two species be chemically coupled or even on the same molecule, relies on the nonlinear effect of the demagnetizing field produced by the nuclei themselves.
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Demagnetizing fields in active magnetic regenerators

2014
A magnetic material in an externally applied magnetic field will in general experience a spatially varying internal magnetic field due to demagnetizing effects. When the performance of active magnetic regenerators (AMRs) is evaluated using numerical models the internal field is often assumed to be spatially constant and equal to the applied field, thus
Nielsen, Kaspar Kirstein, Bahl, Christian R.H., Smith, Anders   +2 more
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