Abstract
Liquid hydrogen (LH2) is one of the most efficient ways for storing and transporting the H2 energy in hydrogen economy. Magnetic refrigeration using the magnetocaloric effect (MCE) is the preferable means to liquify H2 since the adiabatic demagnetization process can approach 100% of carnot efficiency. In practice, mainly due to the lack of single material that covers enough temperature span, the efficiencies of the prototypes of magnetic refrigerators are still far below the economic viable threshold (50%). Based on a theoretical analysis on the single ion anisotropy of Tb3+‐containing materials, it is found experimentally that MCE can be 100% enhanced for a model crystal LiCaTb5(BO3)6 (LCTB) at 20.2 K over the practical magnetic cooling medium Gd3Ga5O13 (GGG) for the cryogenic temperatures, and more importantly the enhancement covers a range of at least 15–40 K in a typical field change of 6 T.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
