Anisotropy component of electromagnetic force and torque

The paper deals with the problem of surface-integral representation of electromagnetic force/torque for magnetically anisotropic region. It is pointed out that in some anisotropic regions a component of electromagnetic force/torque appears - the so-called anisotropy component. The total electromagnetic field force/torque calculated with the help of Maxwell’s and Lorentz’s methods could lead to the different values for some anisotropic medium (homogeneous, without hysteresis). The coenergy method is used to evaluate total force/torque too. Analytical calculations of force/torque for isotropic and anisotropic media in electromagnetic field are presented. The condition for surface integral representation of Lorentz’s either force or torque is formulated.