Mechanochemistry in spin-glass mosaic perovskites

ORAL

Abstract

Mixed-metal halide perovskites have been reported to exhibit emergent electronic properties including strong optical absorption and pressure-dependent electronic conductivity in Cu(I)-Cu(II)-In(III) chloride perovskites in a p-chloroanilinium matrix [1]. Inspired by these phenomena and the success of a solvent-free mechanochemical synthesis route, a new family of mosaic perovskites is studied for its emergent magnetic properties. These materials have been synthesized using ball-milling and solution-based techniques. The mechanochemical driving force behind its atomistic clustering, short-range ordering, and spin-glass character is analyzed based on advanced Ising and Hubbard models [2,3]. These 2D halide perovskites in an organic matrix represent a general design strategy in materials design of magnetic properties via mechanochemical alloying.



References

[1] Li, J. et al. Angew. Chem. Int. Ed. 62, e202300957 (2023).

[2] Zhang, Z. J. Mater. Sci. Tech. 44, 116-120 (2020).

[3] Argunov, E. V. & Kartsev, A. I. Comput. Mater. Sci. 244, 113192 (2024).

*Supported by the Division of Chemistry of the National Science Foundation under grants: 2023644 (Phase I) and 2303044 (Phase II)

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Publication: Li, J. et al. Angew. Chem. Int. Ed. 62, e202300957 (2023).

Presenters

  • Steven M Baksa

    • Northwestern University, Department of Materials Science and Engineering
    • Northwestern University

Authors

  • Steven M Baksa

    • Northwestern University, Department of Materials Science and Engineering
    • Northwestern University

  • Clara Zwanziger

    • Stanford University, Department of Chemistry

  • Hemamala Karunadasa

    • Stanford University, Department of Chemistry, SLAC National Lab
    • Stanford University

  • James M Rondinelli

    • Northwestern University
    • Northwestern University, Department of Materials Science and Engineering
    • Department of Material Science and Engineering, Northwestern University