Fig. 1: Magnetic circuit structure design and working principle of the TMG.
From: High-performance thermomagnetic generator controlled by a magnetocaloric switch
a Detailed schematic illustration. the main components of the magnetic circuit include the NdFeB permanent magnets, magnetic yokes, gadolinium (Gd), sample cabins, and a coil. b, c The working principle of the magnetic circuit during the cycle. Blue indicates that the TMM is ferromagnetic at low temperature, and red indicates that the TMM is paramagnetic at high temperature. Since the temperature of the TMMs on both sides alternates between cold and hot, the direction of the magnetic flux in the magnetic circuit is reversed.
