MAGNETORESISTIVE CONVERTER Russian patent published in 2013 - IPC H01L43/08 B82B1/00 

FIELD: measurement equipment.

SUBSTANCE: converter comprises a substrate with a dielectric layer, on which there are four parallel arranged thin-film magnetoresistive strips connected into a bridge circuit, and each strip comprises upper and lower protective layers, between which there are two ferromagnetic films with a separating layer between them. The first insulating layer is arranged above magnetoresistive strips. On the surface of the first insulating layer there are four nanomagnets in the form of rectangular strips arranged along thin-film magnetoresistive strips. Each nanomagnet comprises an auxiliary layer of chrome with a hard-magnetic film applied above it and a protective layer. Coercive force of the hard-magnetic film is at least three times higher than the field of magnetic anisotropy of a ferromagnetic film. Nanomagnets are arranged with a distance equal to width of the nanomagnet strip. The period of nanomagnet repetition is equal to doubled period of repetition of thin-film magnetoresistive strips. The magnetic field created by nanomagnets in neighbouring arms of the bridge circuit is directed as antiparallel. The neighbouring magnetoresistive strips are in minima of positive and negative permanent field of nanomagnets.

EFFECT: reduced consumed capacity and heating.

2 cl, 4 dwg