Exploratory study for anomalous Nernst effect for the usage of efficient thermo-magnetic electricity generation

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In this subject, new ferromagnetic materials showing high anomalous Nernst effect (ANE) and electricity generation structure were investigated for the novel ecological electricity generation using ANE. L10-FePt and L10-MnGa have been chosen as the materials because they show large ANEs with opposite signs. The combination of perpendicularly magnetized FePt and MnGa wires enhances the ANE voltage effectively. Since the direction of anomalous Nernst voltage depends on not only the anomalous Nernst coefficient of each material but also the magnetization, the thermocouple structure made from two FePt wires having different coercivity also worked well to enhance anomalous Nernst voltage.