Issue 47, 2015

A brilliant cryogenic magnetic coolant: magnetic and magnetocaloric study of ferromagnetically coupled GdF3

Abstract

The use of paramagnetic molecules as cryogenic coolants usually requires relatively large fields to obtain a practical cooling effect. Thus, research into magnetic molecular materials with larger MCEs in fields of ≤2 T is the main focus in this area. In this work, the crystal structure, magnetic susceptibility and isothermal magnetization for the inorganic framework material GdF3 were measured, and the isothermal entropy change was evaluated up to 9 T. Thanks to the combination of the large isotropic spin of Gd3+, the dense structure and weak ferromagnetic interaction, an extremely large −ΔSm for GdF3 was observed up to 528 mJ cm−3 K−1 for Δμ0H = 9 T, proving it to be an exceptional cryogenic magnetic coolant.

Graphical abstract: A brilliant cryogenic magnetic coolant: magnetic and magnetocaloric study of ferromagnetically coupled GdF3

Supplementary files

Article information

Article type
Paper
Submitted
30 Jul 2015
Accepted
06 Oct 2015
First published
08 Oct 2015

J. Mater. Chem. C, 2015,3, 12206-12211

Author version available

A brilliant cryogenic magnetic coolant: magnetic and magnetocaloric study of ferromagnetically coupled GdF3

Y. Chen, J. Prokleška, W. Xu, J. Liu, J. Liu, W. Zhang, J. Jia, V. Sechovský and M. Tong, J. Mater. Chem. C, 2015, 3, 12206 DOI: 10.1039/C5TC02352A

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