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Single-crystal EPR spectroscopy of a Co(II) single-chain magnet
- Source :
- Polyhedron. 66:218-221
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- An electron paramagnetic resonance (EPR) study of a single crystal of Co II -based single-chain magnets (SCM) is presented. Discrete resonant absorptions are associated to the presence of magnetic domains within the chains of finite lengths determined by a competition between intra-chain exchange interactions and thermally excited single spin fluctuations. The results are interpreted as a transition from single spin dynamics at high temperature ( T ∼20 K), associated to the Kramers doublet ground state of the individual Co II ions, to archetypical SCM dynamics at low temperatures, where intra-chain correlations form long magnetic domains, whose average length is imposed by the concentration of defects in the sample.
Details
- ISSN :
- 02775387
- Volume :
- 66
- Database :
- OpenAIRE
- Journal :
- Polyhedron
- Accession number :
- edsair.doi...........5c63d9f86900089cfef12d29f2912963