Issue 3, 2015

Slow magnetic relaxation mechanisms in erbium SIMs

Abstract

The magnetic properties of two similar Er3+ complexes have been investigated. [Er(tpm)3(bipy)] (Htpm = 1,1,1-trifluoro-5,5-dimethyl-2,4-hexanedione and bipy = 2,2′-bipyridine) displays thermally activated slow relaxation of magnetisation under a zero direct-current (DC) field. Under an applied HDC field of 1000 G, [Er(tpm)3(bipy)] exhibits two thermally activated processes with energy barriers of 9 and 40 K, while [Er(tfa)3(bipy)] (Htfa = 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione) shows only one activated process with a barrier of 15 K. Both compounds are luminescent in the solid state, emitting in the near IR region.

Graphical abstract: Slow magnetic relaxation mechanisms in erbium SIMs

Supplementary files

Article information

Article type
Paper
Submitted
10 Sep 2014
Accepted
11 Nov 2014
First published
11 Nov 2014

Dalton Trans., 2015,44, 1264-1272

Author version available

Slow magnetic relaxation mechanisms in erbium SIMs

M. R. Silva, P. Martín-Ramos, J. T. Coutinho, L. C. J. Pereira, V. Lavín, I. R. Martín, P. S. P. Silva and J. Martín-Gil, Dalton Trans., 2015, 44, 1264 DOI: 10.1039/C4DT02767A

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