Novel magnetic materials for applications as cooling media and permanent magnets

Tidsperiod: 2013-01-01 till 2016-12-31

Projektledare: Olle Eriksson

Medarbetare: Yvonne Brandt Andersson, Per Nordblad, Peter Svedlindh, Mats Leijon, Sandra Eriksson, Martin Häggblad Sahlberg, Martin Sahlberg

Finansiär: Vetenskapsrådet

Bidragstyp: Projektbidrag

Budget: 12 000 000 SEK

We propose here to identify materials with significant magnetocaloric effect (MCE) at room temperature, so that they can be used in practical applications. We also have the ambition to outline the details of the magnetic interactions which are important for generating a large magneto caloric effect, and to outline the coupling between magnetism, structure and chemical composition. These studies will be undertaken by a close collaboration between materials chemistry, experimental solid state physics and materials specific theory. The project on the magneto caloric effect also has the aim to build a demonstrator and to outline proof of concept for building a cooling device based on the magneto caloric effect. We will also attempt to identify rare-earth- and Pt-free magnetic materials with a large magnetic anisotropy, for permanent magnetization (PM) applications. These investigations will combine relativistic first principles theory with experimental investigations. We have the ambition to identify several new materials with competing performance to rare-earth based permanent magnets, with a coercive field ~80 % of the of Nd2Fe14B and a saturation moment equal to or larger than that of Nd2Fe14B.