Tm(III) complexes undergoing slow relaxation of magnetization: exchange coupling and aging effects

A. Amjad, Albert Figuerola, L. Sorace*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The present study focuses on the dynamic magnetic behaviour of exchange coupled 3d-4f complexes containing the scarcely investigated non-Kramers Tm3+ center, the 3d metal ions being either the low-spin Fe3+ (1) or the diamagnetic Co3+ (2) ion. Both complexes display field-induced slow relaxation of magnetization. The field and temperature dependences of the relaxation rate provided indication of relevant contributions from quantum tunnelling, direct, Orbach and Raman processes, with only minor effects from exchange coupling interactions. Furthermore, the aged sample of 2 exhibited an additional relaxation process, possibly due to structural modifications accompanied by solvent loss, highlighting the importance of a careful consideration of this factor when analysing the magnetization dynamics in solvated systems.

Original languageEnglish (US)
Pages (from-to)3848-3856
Number of pages9
JournalDalton Transactions
Volume46
Issue number12
DOIs
StatePublished - Jan 1 2017

ASJC Scopus subject areas

  • Inorganic Chemistry

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