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Chinese Physics, 2001, Vol. 10(7): 658-661    DOI: 10.1088/1009-1963/10/7/315
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

A FORMULA FOR CALCULATING THE ERRORS OF SUPERCONDUCTING MAGNETIZATION CURVE

Guo Shu-quan (郭树权)a, Liu Meng-lin (刘梦林)b, Zheng Dong-ning (郑东宁)a, Zhao Bai-ru (赵柏儒)a
a National Laboratory for Superconductivity, Institute of Physics, Chinese Academy Science, Beijing 100080, China; b Department of Physics, Tsinghua University, Beijing 100084, China
Abstract  Because of field inhomogeneity in the magnetization measurement system, large errors may exist in the decreasing field superconducting magnetization curves, but not in the increasing field curves. The physical origin of the large errors is proposed here. A simple formula for calculating the errors is given. This formula is consistent with the experimental data.
Keywords:  SQUID magnetometer      errors of superconducting magnetization measurement      formula for calculating the errors  
Received:  16 October 2000      Revised:  21 March 2001      Accepted manuscript online: 
PACS:  75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)  
  85.25.Dq (Superconducting quantum interference devices (SQUIDs))  
  07.55.Jg (Magnetometers for susceptibility, magnetic moment, and magnetization measurements)  
Fund: Project supported by the National High Technology Development Program of China (Grant No. 863-CD090000).

Cite this article: 

Guo Shu-quan (郭树权), Liu Meng-lin (刘梦林), Zheng Dong-ning (郑东宁), Zhao Bai-ru (赵柏儒) A FORMULA FOR CALCULATING THE ERRORS OF SUPERCONDUCTING MAGNETIZATION CURVE 2001 Chinese Physics 10 658

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