High-temperature thermoelectric (TE) applications may be implemented quickly . Borides are promising for this, with recent developments like huge ZT enhancement in Sm- and Yb-borides, and p, n control. Magnetic compounds are gaining attention as TE properties were demonstratively enhanced through magnetism . Thiospinels were considered low performance TE materials, but by some unusual doping of Cr with Sb, we obtained ZT≈0.43 for CuCr2-xSbxS4 . Temperature dependence is unusual with Seebeck coefficient and electrical conductivity both rising with temperature, reminiscent of disordered variable-range-hopping compounds but with much better TE. I will discuss the role of magnetism and disorder in TE properties.
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