TY  - JOUR
AU  - Keshri, Aryan
AU  - Das, Prasanna
AU  - Devaraj, Nayana
AU  - Chowdhury, Sourav
AU  - Dey, Jayjit Kumar
AU  - Ojha, Sunil
AU  - Gupta, Pushpendra
AU  - Hoesch, Moritz
AU  - Afaneh, Feras
AU  - Roul, Basanta
AU  - Venkatesan, Thirumalai
AU  - Saha, Bivas
AU  - Narayan, Awadhesh
AU  - Bibes, Manuel
AU  - Das, Sujit
TI  - Unlocking Exceptional Negative Valency and Spin Reconstruction in Non‐Collinear Anti‐Ferromagnetic Antiperovskite Mn<sub>3</sub>NiN Film
JO  - Advanced functional materials
VL  - 35
IS  - 32
SN  - 1616-301X
CY  - Weinheim
PB  - Wiley-VCH
M1  - PUBDB-2025-02173
SP  - 2500655
PY  - 2025
N1  - Waiting for fulltext 
AB  - Antiperovskite manganese nitrides have intriguing magnetic and electronic properties that are not well understood. Just as their perovskite oxide counterparts, they are expected to display properties tunable through epitaxial strain engineering, which has barely been explored yet. Here, three notable contributions are made to the understanding and tuning of these fascinating materials, focusing on Mn<sub>3</sub>NiN. First, combining X-ray spectroscopy measurements and first-principles calculations, an unusually large negative oxidation state of Ni<sup>3−</sup>is reported. Second, a substantial shift of the antiferromagnetic ordering temperature by 116 K, from 266 to 150 K, is reported by growing Mn3NiN films on different substrates. This shift is due to the mixed contributions of ferrimagnetic and antiferromagnetic phases. Third, a plasmonic signature with a high optical extinction coefficient in the infrared to visible range is exhibited, tunable by different substrates. The findings suggest that Mn3NiN has significant potential in antiferromagnetic spintronics, and plasmonics, expanding the scope of new materials for electromagnetic field-controlled plasmonics, piezo spintronics, and multicaloric applications.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1002/adfm.202500655
UR  - https://bib-pubdb1.desy.de/record/632247
ER  -