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Spin structures and band gap reduction of high-pressure triple perovskite Mn3MnTa2O9

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https://doi.org/10.1039/D1TC04231A

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2021

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https://hdl.handle.net/20.500.14352/117543

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Elena 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.

Abstract

Herein 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.

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Química inorgánica (Química)

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2303 Química Inorgánica

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