“…In fact, the study of the effect of magnetic transitions caused by the application of external magnetic fields and their variation with hydrogen storage has attracted the attention of several researchers [ [37] , [38] , [39] ]. Aware that the LaNi 5 is an intermetallic compound of a 3d magnetic transition; it is a Pauli paramagnet compound [ [40] , [41] , [42] , [43] ], researchers noted that the hydrogenation considerably affects the magnetic properties of hydrides due to the increase in mesh volume and the change in the magnetic structure marked by the segregation of ferromagnetic particles (Ni) [ [44] , [45] , [46] , [47] ]. Particularly, the change in the magnetic properties, which occur due to the hydrogen absorption / desorption has prompted researchers to study the effect of an external magnetostatic field on the hydrogen storage reaction.…”