Hall Effect In Ferromagnetic Films Research Articles

On the theory of the spontaneous Hall effect in ferromagnetic films

The spontaneous Hall coefficient (SHC) of metallic ferromagnetic film is calculated. It is shown that the difference between the SHC of film and that of bulk ferromagnetic is caused by the inhomogeneous distribution of the current across the film and the asymmetric scattering of the conduction electrons on the surface defects.

On the theory of the spontaneous Hall effect in ferromagnetic films

The spontaneous Hall coefficient (SHC) of metallic ferromagnetic film is calculated. It is shown that the difference between the SHC of film and that of bulk ferromagnetic is caused by two factors: (i) the unhomogeneous distribution of the current across the film and (ii) the asymmetric scattering of the conduction electrons on the surface defects. Due to the size effect the SHC of thin ferromagnetic film may strongly deviate from that of bulk sample and even have opposite sign.

Applicability of the planar Hall effect

The planar Hall effect in ferromagnetic films has been investigated. Particularly the response to inhomogeneous fields has been studied in view of the method of detection of the Hall voltage (’’one-sided’’ or traditional). It is concluded that ’’one-sided’’ detection may be of advantage. The Hall response around the theoretical singularity of the transverse susceptibility has been studied. It is found that a very sensitive device can be designed, based on this effect.