  Magnetic hyperthermia is an adjuvant therapy for cancer where injected
magnetic nanoparticles are used to transfer energy from the time-dependent
applied magnetic field into the surrounding medium. Its main importance is to
be able to increase the temperature of the human body locally. This
localization can be further increased by using a combination of static and
alternating external magnetic fields. For example, if the static field is
inhomogeneous and the alternating field is oscillating then the energy transfer
and consequently, the heat generation is non-vanishing only where the gradient
field is zero which results in superlocalization. Our goal here is to study
theoretically and experimentally whether the perpendicular or parallel
combination of static and oscillating fields produce a better
superlocalization. A considerable polarisation effect in superlocalization for
small frequencies and large field strengths which are of great importance in
practice is found.
