A 3D array of Co(II) cubanes with very strong magnetic anisotropy

Nesrine Ben Saber (1) , Amor Benali (2) , Lise-Marie Lacroix (3) , Patrick Gredin (4) , Bertrand Raquet (5) , G. Viau (3)

1 Faculté des Sciences de Bizerte [Université de Carthage]
2 Départemnt of Chemistry, University of Dammam
3 LPCNO - Laboratoire de physique et chimie des nano-objets
4 IRCP - Institut de Recherche de Chimie Paris
5 LNCMI-T - Laboratoire national des champs magnétiques intenses - Toulouse

A new cobalt alkoxide Co(C3H6O2) resulting from the reaction of cobalt acetate with 1,3 propanediol, exhibits a tetragonal structure that consists in a 3D framework of [Co4O4] cubanes connected to each other by double oxygen bridge in which all the Co(II) cations are five coordinated. This compound exhibits a 3D magnetic order below 36 K and combines exceptionally high magnetic anisotropy (coercivity higher than 4 T) with complex magnetic structure revealed by a spin flip at 13 T.

Mots clés: Cubane; Structure; XRD; Cobalt alkoxide; Magnetic properties

Domaines: Supraconductivité [cond-mat.supr-con]; Chimie

Nesrine Ben Saber, Amor Benali, Lise-Marie Lacroix, Patrick Gredin, Bertrand Raquet, et al.. A 3D array of Co(II) cubanes with very strong magnetic anisotropy. Journal of Alloys and Compounds, 2016, ⟨10.1016/j.jallcom.2016.06.014⟩. ⟨hal-01719737⟩