The effect of sample geometry on magnetic levitation force for a disk-shape YBCO superconductor

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/27735

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题名:	The effect of sample geometry on magnetic levitation force for a disk-shape YBCO superconductor
作者:	陳偉正;Chan, W. C.
贡献者:	淡江大學物理學系
关键词:	Shape effect;Levitation force;First critical field
日期:	2003-06-01
上传时间:	2009-12-31 10:40:44 (UTC+8)
出版者:	Elsevier
摘要:	In this investigation, we present calculations of levitation forces between a large cylindrical permanent magnet and a small disk-shape YBCO superconductor. The induced electric current inside the superconductor was assumed to be in tube-like shape with current density equal to the average critical current density of the superconducting sample (SS). The induced magnetic field distribution can thus be calculated for both outside and inside of the superconductor. By comparing with self-consistent calculations done by other researchers, the effect of self induced field on the total field distribution can be evaluated. It is found that different sample geometries have different corrections for both first critical field (Hc1) and levitation force of the SS. However, for superconductor with smaller average critical current density, the effect of sample geometry on levitation force is smaller.
關聯:	Physica C: Superconductivity 390(1), pp.27-30
DOI:	10.1016/S0921-4534(02)02803-4
显示于类别:	[物理學系暨研究所] 期刊論文

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