A {Gd12Na6} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures

Thomais G. Tziotzi, David Gracia, Scott J. Dalgarno, Jürgen Schnack, Marco Evangelisti, Euan K. Brechin, Constantinos J. Milios

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
23 Downloads (Pure)

Abstract

Reaction of Gd(OAc)3·4H2O, salicylaldehyde and CH3ONa in MeCN/MeOH affords [Gd12Na6(OAc)25(HCO2)5(CO3)6(H2O)12]·9H2O.0.5MeCN (1·9H2O.0.5MeCN), whose structure describes a quadruple-wheel consisting of two {Na3} and two {Gd6} rings. The magnetic properties of 1 reveal very weak antiferromagnetic interactions between the GdIII ions, which give rise to a record magnetocaloric effect at low applied magnetic fields and low temperatures. The magnetic entropy change reaches −ΔSm= 29.3 J kg–1 K–1 for full demagnetization from B = 1 T at T = 0.5 K.

Original languageEnglish
Pages (from-to)7743-7747
Number of pages5
JournalJournal of the American Chemical Society
Volume145
Issue number14
Early online date3 Apr 2023
DOIs
Publication statusPublished - 12 Apr 2023

Fingerprint

Dive into the research topics of 'A {Gd12Na6} Molecular Quadruple-Wheel with a Record Magnetocaloric Effect at Low Magnetic Fields and Temperatures'. Together they form a unique fingerprint.

Cite this