Solana Madruga, ElenaRitter, ClemensMentré, OlivierArévalo-López, Ángel M.2025-02-022025-02-022021Elena Solana-Madruga, Clemens Ritter, Olivier Mentré, Ángel M Arévalo-López. Spin structures and band gap reduction of high-pressure triple perovskite Mn3MnTa2O9. J. Mater. Chem. C, 2021, 9, 14916-14920.10.1039/D1TC04231Ahttps://hdl.handle.net/20.500.14352/117543Herein we report the second transition-metal-only triple perovskite Mn3MnTa2O9, from high pressure-high temperature transformation of Mn4Ta2O9. It shows 1 : 2 Mn : Ta B-site order and a complex antiferromagnetic behavior with a collinear structure that modulates into a spin density wave. The high pressure phase presents a 25% band gap reduction compared to its multiferroic precursor, recoverable above 625 °C.engAttribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/journal articlehttps://doi.org/10.1039/D1TC04231Ahttps://pubs.rsc.org/en/content/articlelanding/2021/tc/d1tc04231aopen access546Química inorgánica (Química)2303 Química Inorgánica