The paper about environmentally benign synthesis and color tuning of Sr-Ta oxynitrides prepared using urea as a solid nitriding agent have been published in Inorganic Chemistry.
https://pubs.acs.org/doi/10.1021/acs.inorgchem.0c03758
Press release (in Japanese).
https://www.hiroshima-u.ac.jp/news/63329
https://www.hiroshima-u.ac.jp/system/files/159179/20210225_pr01.pdf
https://www.hokudai.ac.jp/news/pdf/210226_pr.pdf
This paper was selected as Supplementary Journal Cover.