Document Type
Article
Original Publication Date
2011
Journal/Book/Conference Title
Journal of Applied Physics
Volume
109
Issue
7
DOI of Original Publication
10.1063/1.3536514
Date of Submission
October 2015
Abstract
We present a magnetic study of the Gd3N@C80 molecule, consisting of a Gd-trimer via a nitrogen atom, encapsulated in a C80 cage. This molecular system can be an efficient contrast agent for magnetic resonance imaging (MRI) applications. We used a low-temperature technique able to detect small magnetic signals by placing the sample in the vicinity of an on-chip SQUID. The technique implemented at the National High Magnetic Field Laboratory has the particularity of being able to operate in high magnetic fields of up to 7 T. The Gd3N@C80shows a paramagnetic behavior and we find a spin transition of the Gd3N structure at 1.2 K. We perform quantum mechanical simulations, which indicate that one of the Gd ions changes from a 8S7/2 state (L = 0, S = 7/2) to a 7F6 state (L = S = 3, J = 6), likely due to a charge transfer between the C80 cage and the ion.
Rights
Chen, L., Carpenter, E. E., & Hellberg, C. S., et al. Spin transition in Gd3N@C-80, detected by low-temperature on-chip SQUID technique. Journal of Applied Physics, 109, 07B101 (2011). Copyright © 2011 American Institute of Physics.
Is Part Of
VCU Chemistry Publications
Comments
Originally published at http://dx.doi.org/10.1063/1.3536514