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

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 pr...

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Published inJournal of materials chemistry. C, Materials for optical and electronic devices Vol. 9; no. 41; pp. 14916 - 14920
Main Authors Solana-Madruga, Elena, Ritter, Clemens, Mentré, Olivier, Arévalo-López, Ángel M
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 07.11.2021
Subjects
Antiferromagnetism
Energy gap
High temperature
Perovskites
Spin density waves
Transition metals
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Summary: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.
ISSN:2050-7526
2050-7534
DOI:10.1039/d1tc04231a