Structure and Magnetocaloric Properties of Two Cadmium Gadolinium Borates
Tingwei Wan1,2, Yunhui Wang1,2, Zuhua Chen1,2
1Center for Crystal Research and Development, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
None:
Two cadmium-gadolinium-borates, CdGdB5O10 and Cd4GdB3O10, were synthesized as polycrystalline samples, and their single crystals were also grown. Monoclinic structures in space groups P21/n and Cm were identified for the two compounds, with magnetic properties characterized through M-T and M-H measurements. The maximum magnetic entropy change (-ΔSMmax) of CdGdB5O10 reaches 23.94 J·kg-1·K-1 at 5 T and 3 K, approaching the value reported for commercial Gd3Ga5O12 under identical conditions. Cd4GdB3O10 exhibits a -ΔSMmax of 13.96 J·kg-1·K-1 at 5 T and 2 K, comparable to Dy3Ga5O12. These two cadmium-gadolinium-borates may have potential for cryogenic magnetic cooling applications due to their high -ΔSMmax, broad entropy plateau, and stable structure. Additionally, the optical and thermal properties of CdGdB5O10 were investigated.
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