Details

Autor(en) / Beteiligte

• Denis Romero, Fabio
• Lepoittevin, Christophe
• Kodjikian, Stéphanie
• Colin, Claire V.
• Hayward, Michael A.

Titel

Ca2MnO3X (X = Cl, Br) Oxyhalides with 1‑Dimensional Ferromagnetic Chains of Square-Planar S = 2 Mn3

Ist Teil von

• Journal of the American Chemical Society, 2023-10, Vol.145 (42), p.23346-23351

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Mixed anion oxyhalides with the formula Ca2MnO3X (X = Cl, Br) are synthesized using solid-state reaction methods. These two materials crystallize in a novel structure type due to the small ionic radius of Ca and the strong Jahn–Teller effect of Mn3+. The resulting structure (space group Cmcm) contains one-dimensional chains of MnO4 square planes, with an angle of ∼120° between neighboring planes. At low temperatures, the two materials adopt magnetic arrangements, with ferromagnetic chains coupled antiferromagnetically. On applying a magnetic field, both materials experience spin-flop transitions.