In summary, we have presented a col

In summary, we have presented a cold sintering process which uses intermediate phases which react to create a nano infill phase to densify the green body. We have demonstrated this as a method for sintering SrTiO3 at 950
C from feedstocks which include micron as well as nanosized particulates. The methodology creates micro-reactions around each particle during the post-press heating step where the reaction mirrors the synthetic pathway followed by the formation of SrTiO3 by deep eutectic solvent synthesis. The wide availability of soluble chlorides, coupled with the added exibility in particle size which this method can accommodate, offers a highly adaptable route to create fully dense ceramics at reduced temperatures. Additionally, different micro-reactions could be selected making this processing technique highly adaptable for making fully dense ceramic/ceramic composites. This method is distinct from other CS processes as it follows a different mechanism for the formation of the inlling phase. As this is a reaction rather than a TLK precipitation, the requirement for pristine nanoscale surfaces is removed, creating the opportunity to cold sinter micron-scale materials i.e. those created using standard solid-state processing, as demonstrated here. This, and the wider availability of soluble metal chlorides and reactions of a similar style, make this a step towards a general cold sintering strategy for complex functional oxides.