Structure and magnetic properties of high coercive [PrFeB_x/Cu]_n films with out-of-plane orientation

摘要

Pr-Fe-B single layer and [PrFeB_x/Cu]_n films were prepared by magnetron sputtering on Si substrate heated at 650 ℃. The influence of the composition and thickness of Cu spacer layer on the structure and magnetic properties of films with out-of-plane orientation are investigated. The [PrFeB_x/Cu]_n films present an enhanced coercivity and a lower remanence, in comparison with the results of Pr-Fe-B single layer. The coercivity H_(c⊥)of about 19.7 kOe and the remanence ratio M_r/M_s of about 0.90 are achieved in the Mo(50 nm)/[PrFeB(300nm)/Cu(2 nm)]_2/ Mo(50 nm) film.