High-field magnetic properties in Nd-Fe intermetallic compound

► An improved two-sublattice model is applied to analyze the magnetic properties in Nd2Fe17Hx. ► The difference of the magnetization in A and B sublattice discussed under different conditions. ► The insertion of hydride affects the magnetization in Nd and Fe sublattices. ► The appropriate values of the fitting parameters αA and αB are given. ► αA and αB are the functions of T and He.