High densification of BaZrS3 powder inspired by the cold-sintering process

We report on the sintering of powders chalcogenide perovskite BaZrS3 at low and intermediate temperatures. is most widely studied semiconductor. Most experimental results to-date have been made using loose powder cold-pressed pellets (i.e. green bodies). Straightforward methods to achieve dense ceramics are challenging because decomposes oxidizes in air above 550 °C. Here, we take inspiration from cold-sintering process develop a low-to-intermediate densification for perovskites. Typical additives cold oxides do not accelerate sintering. At higher temperature, iodine remarkably successful as an additive densification. density up 92% 450 °C 425 MPa. Our does cause significant oxidation. Thermogravimetric measurements reveal formation intergranular phase. Impedance spectroscopy that bulk dielectric properties unaffected by ball milling subsequent