Аннотация:In the works published earlier by the authors, the magnetic properties of three-layer Co/Cu/Co samples at room temperature were studied. It was found that the saturation field of the samples oscillates in magnitude with a change in the thickness of the copper layer. The results obtained indicated the influence of the exchange interaction on the magnetic properties of the samples. For samples with copper thicknesses equal to 1.4, 2.2, and 3.2 nm, two-stage hysteresis loops were observed, the complex shape of which was explained by antiferromagnetic exchange interaction through the copper interlayer. This paper presents the results of studying the magnetic properties and magnetic field behavior of Co/Cu/Co samples at low temperatures.