1. Spin structures and band gap reduction of high-pressure triple perovskite Mn3MnTa2O9
- Author
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Elena Solana-Madruga, Angel M. Arevalo-Lopez, Olivier Mentré, Clemens Ritter, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Institut Laue-Langevin (ILL), ILL, Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and ANR-19-CE08-0002,AMANTS,'A-site Manganites' pour mAgNetoelectrics et mulTiferroics de contitions extrêmeS(2019)
- Subjects
0303 health sciences ,Materials science ,Condensed matter physics ,Band gap ,[CHIM.MATE]Chemical Sciences/Material chemistry ,General Chemistry ,010402 general chemistry ,01 natural sciences ,0104 chemical sciences ,Reduction (complexity) ,03 medical and health sciences ,Phase (matter) ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,Materials Chemistry ,Antiferromagnetism ,Spin density wave ,Condensed Matter::Strongly Correlated Electrons ,Multiferroics ,030304 developmental biology ,Perovskite (structure) ,Spin-½ - 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.
- Published
- 2021