USE OF A MATERIAL FREE OF RARE EARTH METALS AS A MAGNETOCALORICALLY ACTIVE MATERIAL

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The invention relates to the use of a material free of rare earth metals as a magnetocalorically active material for products and devices for cooling or heating media and objects. The problem of the present invention consists of a low-cost magnetic material comprising a strong magnetocaloric effect per unit volume at a wide range of the natural ambient temperature, that is non-toxic, free of rare earth metals, and not comprising any other very rare elements. The essential object of the invention comprises a material free of rare earth metals having the composition (Fe1-aMa)Xb, where 0≤a0, and where M = Ti, V, Cr, Mn, Co, Ni or a mixture of said elements, and where X = H, B, C, N, Si or a mixture of said elements is used as a magnetocaloric active material for products and devices for cooling or heating media and objects.