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Author

Takafumi Yamamoto

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Sep 2026

Suppressing Second-Order Jahn–Teller Distortion of Bi3+ by Smaller Y3+-Substitution in Bi3O4Cl

Controlling local coordination environments of second-order Jahn–Teller (SOJT)-active post-transition metal cations remains a significant challenge due to their inherent preference for asymmetric environments. Previously, we reported that the high-symmetry Y3+ site in layered Bi2YO4Cl can serve as a structural templa...

Kosei Takano, Kanta Ogawa, Takafumi Yamamoto · 0 citations
Sep 2026

Dynamic Bending of Carbodiimide Anions Derives Uniaxial Negative Thermal Expansion in ZnNCN

Materials exhibiting negative thermal expansion (NTE), characterized by anomalous lattice contractions upon heating, have attracted considerable attention because of the unique attendant changes in crystal structure. A wide variety of compounds, including metal oxides, fluorides, and cyanides, show this phenomenon as...

Taichi Nagai, Eri Arita, Akira Miura et al. · 0 citations

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