探討在固定磁浮力下，不同磁浮高度與溫度對高溫超導體磁摩擦力之影響

To Study the Effect of different levitational height and temperatures on the Magnetic Fricitional Force of the HTSC under fixed levitation force.

黃健益(Chien-Yi Huang)

指導教授 ： 陳偉正

淡江大學/理學院/物理學系碩士班/碩士(2008年)

https://doi.org/10.6846/TKU.2008.00918

摘要

本論文的主要目的在研究高溫超導體YBCO在不同磁浮高度與不同溫度下，與磁摩擦力的關係。經由探討所得到的數據，磁摩擦力與磁浮高度有關。高度愈低，磁場在超導體的強度愈強且其變化量也愈大，總能量之耗損也比較大，磁摩擦力就愈大。

關鍵字

磁摩擦力

並列摘要

The main objective of this project is to study the behavior of different levitation height of a rotate permanent magnet levitates above a high-temperature superconductor YBCO versus fricitional force under different temperatures .From our experimental data,we found that magnetic frictional force is a function of the the levitation height .Smaller height corresponds to stronger intensity and larger change amount of the magnetic field inside the superconductor .That means more energy lost and large magnetic frictional force .

並列關鍵字

YBCO ； magnetic frictional force

參考文獻

4.B.R. Weinberger, L. Lynds, J.R. Hull, U. Balachandran(1991)﹒Low friction in high temperature superconductor bearings﹒ Appl. Phys. Lett. Vol.59, No. 9.

5.John R. Hull and Ahmet Cansiz(1999)﹒Vertical and forces between a permanent magnet and high-temperature superconductor﹒J. Appl. Phys. ,Vol. 86, No. 11.

6.W.C. Chan, D.S. Jwo, J.J. Lee(1995)﹒Bean's model and magnetic flux-drag torques for high-Tc superconductors Physica C 252,203-207.

參考文獻

1.呂台華、吳景淼等（1998）。超導體簡介。台北市：台灣書店。