中国物理B ›› 2001, Vol. 10 ›› Issue (7): 658-661.doi: 10.1088/1009-1963/10/7/315

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A FORMULA FOR CALCULATING THE ERRORS OF SUPERCONDUCTING MAGNETIZATION CURVE

刘梦林1, 郭树权2, 郑东宁2, 赵柏儒2   

  1. (1)Department of Physics, Tsinghua University, Beijing 100084, China; (2)National Laboratory for Superconductivity, Institute of Physics, Chinese Academy Science, Beijing 100080, China
  • 收稿日期:2000-10-16 修回日期:2001-03-21 出版日期:2001-07-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National High Technology Development Program of China (Grant No. 863-CD090000).

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   

  1. a National Laboratory for Superconductivity, Institute of Physics, Chinese Academy Science, Beijing 100080, China; b Department of Physics, Tsinghua University, Beijing 100084, China
  • Received:2000-10-16 Revised:2001-03-21 Online:2001-07-15 Published:2005-06-12
  • Supported by:
    Project supported by the National High Technology Development Program of China (Grant No. 863-CD090000).

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摘要： 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.

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.

Key words: SQUID magnetometer, errors of superconducting magnetization measurement, formula for calculating the errors

中图分类号:  (Magnetization curves, hysteresis, Barkhausen and related effects)

  • 75.60.Ej
85.25.Dq (Superconducting quantum interference devices (SQUIDs)) 07.55.Jg (Magnetometers for susceptibility, magnetic moment, and magnetization measurements)