In Honor of Nobel Laureate Prof. M Stanley Whittingham
| STRAINED TUNED STRUCTURES AND FUNCTIONS IN MIXED ANION COMPOUNDS Hiroshi Kageyama1; 1KYOTO UNIVERSITY, Kyoto, Japan; PAPER: 74/SolidStateChemistry/Regular (Oral) OS SCHEDULED: 16:20/Tue. 28 Nov. 2023/Dreams 4 ABSTRACT: Mixed-anion compounds are attracting attention because of novel functions that are not found in oxides [1]. In this presentation, I show several examples where strain can alter structures and properties of mixed-anion compounds. The first example is anion-vacancy ordered perovskite SrV(O,N)3-x thin film, in which the period and orientation of anion-deficient layers can be altered by biaxial strain from a substrate [2]. In EuVO2H films, substrate strain induces electron transfer from Eu2+ to V3+, resulting in a 4-fold enhancement of the ferromagnetic transition temperature and perpendicular magnetic anisotropy [3]. In addition, in a series of layered oxychalcogenides synthesized at high pressure, the giant tensile strain provided during decompression process from the chalcogen layer can add new functions to the oxide layer [4-5]. References: [1] H. Kageyama et al., Nat. Commun. 9, 772 (2018). [2] T. Yamamoto et al., Nat. Commun. 11, 5923 (2020). [3] M. Namba et al., submitted. [4] Y. Matsumoto et al., Angew. Chem. Int. Ed. 57, 756 (2019). [5] Y. Yang et al., Inorg. Chem. 61, 7026 (2022). |
