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


Westerström, Rasmus; Dreiser, Jan; Piamonteze, Cinthia; Muntwiler, Matthias; Weyeneth, Stephen; Brune, Harald; Rusponi, Stefano; Nolting, Frithjof; Popov, Alexey; Yang, Shangfeng; Dunsch, Lothar; Greber, Thomas (2012). An endohedral single-molecule magnet with long relaxation times: DySc2N@C80. Journal of the American Chemical Society, 134(24):9840-9843.

Abstract

The magnetism of DySc2N@C80 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 DyIII ions. SQUID magnetometry indicates hysteresis below 6 K, while thermal and nonthermal relaxation is observed. Dilution of DySc2N@C80 samples with C60 increases the zero-field 4f electron relaxation time at 2 K to several hours.

Abstract

The magnetism of DySc2N@C80 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 DyIII ions. SQUID magnetometry indicates hysteresis below 6 K, while thermal and nonthermal relaxation is observed. Dilution of DySc2N@C80 samples with C60 increases the zero-field 4f electron relaxation time at 2 K to several hours.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Catalysis
Physical Sciences > General Chemistry
Life Sciences > Biochemistry
Physical Sciences > Colloid and Surface Chemistry
Language:English
Date:2012
Deposited On:05 Mar 2013 10:10
Last Modified:24 Jan 2022 00:19
Publisher:American Chemical Society
ISSN:0002-7863
OA Status:Green
Publisher DOI:https://doi.org/10.1021/ja301044p