Giant exchange coupling and field-induced slow relaxation of magnetization in Gd2@C79N with a single-electron Gd–Gd bond. Issue 23 (2nd March 2018)

• Record Type: Journal Article
• Authors: Velkos, G.; Krylov, D. S.; Kirkpatrick, K.; Liu, X.; Spree, L.; Wolter, A. U. B.; Büchner, B.; Dorn, H. C.; Popov, A. A.
• Is Part Of: Chemical communications. Volume 54:Issue 23(2018)
• Page Start: 2902
• Page End: 2905
• Publication Date: 2018-03-02
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c8cc00112j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Single-electron Gd–Gd bond in Gd2 @C79 N results in giant ferromagnetic coupling between local 4f magnetic moments and unpaired electron spin. Abstract : Magnetic properties of the azafullerene Gd2 @C79 N are studied by SQUID magnetometry. The effective exchange coupling constant j Gd, e between the Gd spins and the spin of unpaired electron residing on the single-electron Gd–Gd bond is determined to be 170 ± 10 cm −1 . Low temperature AC measurements revealed field-induced millisecond-long relaxation of magnetization.