A cleaner strategy for negative thermal expansion materials (Visiting Assis. Prof. Takumi Nishikubo, Prof. Masaki Azuma)

A strategy encompassing simultaneous coprecipitation and oxidation has allowed the synthesis of highly oxidized amorphous precursors for BiNi_1-xFe_xO₃. This approach overcomes conventional challenges by reducing environmental impact, improving safety, and reducing synthesis time by generating a highly oxidized amorphous precursor, allowing for a more efficient and controlled production of advanced functional oxides.