一、引言描述物质磁性的量对于不同材料采用不同的特征量,这些量的测量大都由测量试样的磁矩计算出来。而磁称法是测量磁矩的重要方法之一。其基本原理是:具有一定磁矩M的试样在梯度磁场中受到一个力 F。F 的方向沿磁场梯度(?)(假定磁场 H 只在z方向有梯度)的方向,F 的大小为 I. INTRODUCTION Describing the amount of material magnetism uses different characteristic quantities for different materials. Most of these measurements are calculated from the moment of the sample being measured. Magnetic measurement is one of the important methods to measure magnetic moment. The basic principle is that a sample with a certain magnetic moment M is subjected to a force F in a gradient magnetic field. The direction of F is along the magnetic field gradient (?) (Assuming that the magnetic field H has a gradient only in the z direction), the magnitude of F is