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Layered perovskite-type compounds MCa2MnNb3TiO13 (M=K,Rb) were synthesized via a unique conventional solid-state reaction. The synthesis was conducted by thoroughly mixing a layered perovskite precursor, MCa2Nb3O10, with MnTiO3 in a stoichiometric molar ratio, followed by high-temperature calcination at 1473 K. Compositional and structural characterizations involving elemental analysis and Rietveld refinement confirmed that the perovskite slabs in the host layers are four [Nb,Ti]O6 octahedra thick, with Ca2+ and Mn2+ ions occupying the A-sites. Subsequent exfoliation by shaking in an aqueous TBOH solution yielded a light brown suspension. AFM revealed the presence of numerous micrometer-sized 2D nanosheets with a uniform thickness of approximately 2.0 nm, indicating complete exfoliation into single perovskite layers. Further in-depth analysis via in-plane and out-of-plane XRD, as well as XPS, confirmed that the obtained 2D materials correspond to individual perovskite layers derived from the Mn-substituted parent phase.

Rights:

• https://creativecommons.org/licenses/by/3.0/
  

Keyword: layered material, nanosheet

Date published: 2026-03-09

Publisher: Royal Society of Chemistry (RSC)

Journal:

• DALTON TRANSACTIONS (ISSN: 14779234) vol. 55 issue. 13 p. 5217-5223

Funding:

• Ministry of Education, Culture, Sports, Science and Technology JPMXP1225NM5176
• Japan Science and Technology Corporation JPMJCR22B1

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1039/d6dt00131a

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Updated at: 2026-04-02 09:29:58 +0900

Published on MDR: 2026-04-02 12:25:45 +0900