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Demagnetization factors for elliptic cylinders
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UNSPECIFIED (2005) Demagnetization factors for elliptic cylinders. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 38 (18). pp. 3333-3342. doi:10.1088/0022-3727/38/18/001 ISSN 0022-3727.
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Official URL: http://dx.doi.org/10.1088/0022-3727/38/18/001
Abstract
The magnetometric (volume averaged) demagnetization factors for cylinders with elliptical cross section are computed using a Fourier-space approach and compared with similar results obtained with a different treatment. The demagnetization factors are given as a series expansion in the eccentricity epsilon of the elliptical cross section, where the terms up to order epsilon(10) are given explicitly as a function of the cylinder aspect ratio. Other simplified expressions, valid in restricted regimes, are also given. Two different series expansions, obtained previously and valid in particular combinations of shape parameters, are recalled and compared with the new results. After the computation of the magnetostatic and exchange-energy terms associated with a vortex closure-domain state in the elliptic cylinder, the single-domain limit, or the critical size below which the structure can support quasi-uniform magnetization, is derived and discussed.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Journal or Publication Title: | JOURNAL OF PHYSICS D-APPLIED PHYSICS | ||||
Publisher: | IOP PUBLISHING LTD | ||||
ISSN: | 0022-3727 | ||||
Official Date: | 21 September 2005 | ||||
Dates: |
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Volume: | 38 | ||||
Number: | 18 | ||||
Number of Pages: | 10 | ||||
Page Range: | pp. 3333-3342 | ||||
DOI: | 10.1088/0022-3727/38/18/001 | ||||
Publication Status: | Published |
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