一嚿磁石磁矩magnetic moment)係指嚿磁石產生嘅磁場嘅強度同方向,條式如下:

當中 係作用喺個磁雙極(magnetic dipole)上嘅力臂(torque)-大致上講就係嚿磁石受到、令佢旋轉嘅力, 係個磁矩值,而 係由外施加落嚿磁石嗰度嘅磁場[1]

  1. Cullity, B. D.; Graham, C. D. (2008). Introduction to Magnetic Materials (2nd ed.). Wiley-IEEE Press. p. 103.