hystereesiskäyränä
Hystereesisäkäyrä, or hysteresis loop, is a graphical representation illustrating the relationship between a magnetic field and the magnetization of a ferromagnetic material. When a material is subjected to an increasing magnetic field, its magnetic domains align, leading to magnetization. As the external field is reduced, the magnetization does not necessarily return to zero along the same path. This phenomenon is known as hysteresis.
The hysteresis loop plots magnetic flux density (B) or magnetization (M) on the y-axis against magnetic field
Further increasing H in the negative direction leads to negative saturation. As H is increased back towards