Slow magnetic relaxation mechanisms in erbium SIMs. Issue 3 (21st November 2014)

• Record Type: Journal Article
• Authors: Silva, M. Ramos; Martín-Ramos, P.; Coutinho, J. T.; Pereira, L. C. J.; Lavín, V.; Martín, I. R.; Silva, P. S. Pereira; Martín-Gil, J.
• Is Part Of: Dalton transactions. Volume 44:Issue 3(2015)
• Page Start: 1264
• Page End: 1272
• Publication Date: 2014-11-21
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c4dt02767a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The magnetic properties of two similar Er 3+ complexes have been investigated. Abstract : The magnetic properties of two similar Er 3+ 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 H DC 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.