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

摘要: 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 ≤2 T is the main focus this area. In work, crystal structure, susceptibility and isothermal magnetization for inorganic framework material GdF3 were measured, entropy change was evaluated up 9 T. Thanks combination isotropic spin Gd3+, dense structure weak ferromagnetic interaction, an extremely −ΔSm observed 528 mJ cm−3 K−1 Δμ0H = T, proving it be exceptional coolant.