The history of oxides traces back to B.C., where their chemical and physical properties depend largely on the choice of metallic elements (cations).
However, since the beginning of the 21st century, compounds consisting of multiple anion species, called mixed-anion compounds, have gained significant attention .
In this seminar, I will provide an overview of the recent developments in the research of mixed-anion compounds from the perspective of synthesis, chemical, and physical properties.
Of particular focus is the concept of strain engineering applied to mixed-anion compounds, including anion-vacancy-order control in perovskite SrV(O,N)3-x , a giant perpendicular magnetic anisotropy in EuVO2H , and band gap control in oxyhalides  and unusual magnetism in oxychalcogenides [5, 6].
 H. Kageyama et al., Nat. Commun. 9, 772 (2018).
 T. Yamamoto et al., Nat. Commun. 11, 5923 (2020).
 M. Namba et al., J. Am. Chem. Soc. 145, 21807 (2023).
 D. Kato et al., unpublished.
 Y. Matsumoto et al., Angew. Chem. Int. Ed. 57, 756 (2019).
 Y. Matsumoto et al., unpublished.
Prof. Hiroshi Kageyama, Kyoto University
Hiroshi Kageyama received his B.S. (1993), M.S. (1995) and PhD (1998) from Kyoto University, under the supervision of Professor Koji Kosuge. Afterwards he worked as a research associate with Professor Yutaka Ueda at University of Tokyo for five years. In 2003, he became an associate professor at Department of Chemistry, Graduate School of Science, Kyoto University. In 2010, he was appointed to a full professor at Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University. He is also an Adjunct Professor at Institute for Integrated Cell-Material Sciences, Kyoto University.
His research interests concern the discovery of new inorganic compounds with novel chemical and physical functionalities, such as (photo)catalysis, magnetism, and superconductivity. In particular, a recent strong emphasis is put on the development and functionalization of mixed-anion compounds such as oxyhydrides and oxyhalides. He was a project leader of “Mixed-Anion project” (2016-2021) supported by MEXT Grand-in-Aid, which includes an ambitious collaborative effort between 40 research groups across Japan. This Mixed-anion project has been extended to the international Core-to-Core project (2020-2026) involving researcher of Japan, China, UK, France, and Belgium.
He has over 400 peer reviewed papers and patents, including Nature, Science, Nature Materials, Nature Chemistry, Nature Communications, Physical Review Letters, Journal of the American Chemical Society, and Angewandte Chemie International Edition, and Inorganic Chemistry. He received various awards including JSPS Prize (2014), CSJ Award for Creative Research (2019), and Inoue Prize for Science (2019).
He is also a research supervisor of PRESTO project of Japan Science and Technology Agency (JST) on “Future Materials” for 2021-2027. He serves as an associate editor of Inorganic Chemistry since 2017.
Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University