In this work, Gd-Co/Co/Cu/ Co-type thin film structures with the properties of thermo-sensitive spin valves have been developed, fabricated and investigated. For them, the results of magnetic and magnetoresistive measurements in a wide range of magnetic fields and temperatures are presented. It is shown that the appearance of a non-collinear magnetic structure in the Gd-Co/Co system significantly affects the shape of the magnetoresistive hysteresis loop. The value of the critical field of magnetization reversal depends on the temperature and can vary due to a change in the ratio between the layers thicknesses of the thin film system.

The magnetic and magnetocaloric properties of amorphous ferrimagnetic Gd-Co films with perpendicular magnetic anisotropy were studied in a wide range of fields and temperatures. The change in the sign of the magnetocaloric effect near the compensation temperature occurs almost abruptly when the magnetic field is oriented perpendicular to the film plane. In a certain temperature range, it happens when the field is oriented along the plane of the sample. The most probable reason for the blurring of this transition is the appearance of a non-collinear magnetic structure.