Synthesis, characterization, and electronic structure of SrBi2S4

Ba4FeAgS6: a new antiferromagnetic and semiconducting quaternary sulfide

“…Stoichiometric compounds with intrinsic low thermal conductivity are important for an efficient thermoelectric material. The experimental low thermal conductivity value of polycrystalline Ba 4 FeAgS 6 can be compared with those of a few well-known reported chalcogenides such as CuFe 2 S 3 (∼2 W mK −1 at 773 K), 51 AgSbSe 2 (∼0.43 W mK −1 at 673 K), 52 SrBi 2 S 4 (∼0.55 W mK −1 at 773 K), 53 and Ba 0.925 Na 0.075 Cu 2 Se 2 (∼0.65 W mK −1 at 773 K). 54 The resistivity of the Ba 4 FeAgS 6 pellet is 4 × 10 –5 Ω cm at RT as measured by using a multimeter.…”