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. 2012 Jun 20;134(24):9840-3.
doi: 10.1021/ja301044p. Epub 2012 Jun 6.

An endohedral single-molecule magnet with long relaxation times: DySc2N@C80

Rasmus Westerström  1 , Jan Dreiser, Cinthia Piamonteze, Matthias Muntwiler, Stephen Weyeneth, Harald Brune, Stefano Rusponi, Frithjof Nolting, Alexey Popov, Shangfeng Yang, Lothar Dunsch, Thomas Greber
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Free article

An endohedral single-molecule magnet with long relaxation times: DySc2N@C80

Rasmus Westerström et al. J Am Chem Soc. .
Free article

Abstract

The magnetism of DySc(2)N@C(80) endofullerene was studied with X-ray magnetic circular dichroism (XMCD) and a magnetometer with a superconducting quantum interference device (SQUID) down to temperatures of 2 K and in fields up to 7 T. XMCD shows hysteresis of the 4f spin and orbital moment in Dy(III) ions. SQUID magnetometry indicates hysteresis below 6 K, while thermal and nonthermal relaxation is observed. Dilution of DySc(2)N@C(80) samples with C(60) increases the zero-field 4f electron relaxation time at 2 K to several hours.

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