They are talking about our metal-organic magnets reported in Science…

Science

Metal-organic magnets with large coercivity and ordering temperatures up to 242°C”, Science, Vol. 370, Issue 6516, pp. 587-592, (2020) – 10.1126/science.abb3861Abstract – Reprint Full text

“Lightening the load” by Jake Yeston – 10.1126/science.370.6516.543-e

See below different links (163), which discuss our work (in 19 different languages):