Giant exchange coupling and field-induced slow relaxation of magnetization in Gd2@C79N with a single-electron Gd–Gd bond

G. Velkos; D. S. Krylov; K. Kirkpatrick; X. Liu; L. Spree; A. U. B. Wolter; B. Büchner; H. C. Dorn; A. A. Popov

doi:10.1039/C8CC00112J

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Giant exchange coupling and field-induced slow relaxation of magnetization in Gd₂@C₇₉N with a single-electron Gd–Gd bond†

G. Velkos,

^a D. S. Krylov,^a K. Kirkpatrick,

^b X. Liu,

^b L. Spree,^a A. U. B. Wolter,^a B. Büchner,^a H. C. Dorn

*^bc and A. A. Popov

*^a

Author affiliations

* Corresponding authors

^a Leibniz Institute for Solid State and Materials Research, Dresden 01069, Germany
E-mail: a.popov@ifw-dresden.de

^b Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA

^c Virginia Tech Carilion Research Institute, Roanoke, Virginia, USA
E-mail: hdorn@vt.edu

Abstract

Magnetic properties of the azafullerene Gd₂@C₇₉N 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.

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Article information

DOI: https://doi.org/10.1039/C8CC00112J
Article type: Communication
Submitted: 05 Jan 2018
Accepted: 13 Feb 2018
First published: 02 Mar 2018
This article is Open Access

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Chem. Commun., 2018,54, 2902-2905

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Giant exchange coupling and field-induced slow relaxation of magnetization in Gd₂@C₇₉N with a single-electron Gd–Gd bond

G. Velkos, D. S. Krylov, K. Kirkpatrick, X. Liu, L. Spree, A. U. B. Wolter, B. Büchner, H. C. Dorn and A. A. Popov, Chem. Commun., 2018, 54, 2902 DOI: 10.1039/C8CC00112J

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