Abstract
Fe x Pt 100− x (30 nm) and [Fe x Pt 100− x (3 nm)/ZrO 2] 10 ( x = 37, 48, 57, 63, 69) films with different ZrO 2 content were prepared by RF magnetron sputtering technique, then were annealed at 550 °C for 30 min. This work investigates the effect of ZrO 2 doping on the microstructural evolution, magnetic properties, grain size, as well as the ordering kinetics of FePt alloy films. The as-deposited films behaved a disordered state, and the ordered L1 0 structure was obtained by post-annealing. The magnetic properties of the films are changed from soft magnetism to hard magnetism after annealing. The variation of the largest coercivities of [Fe x Pt 100− x /ZrO 2] 10 films with the Fe atomic percentage, x and differing amounts of ZrO 2 content reveals that as we increase the ZrO 2 content we must correspondingly increase the amount of Fe. This phenomenon suggests that the Zr or O atoms of ZrO 2 preferentially react with the Fe atoms of FePt alloy to form compounds. In addition, introducing the nonmagnetic ZrO 2 can reduce the intergrain exchange interactions of the FePt/ZrO 2 films, and the interactions are decreased as the ZrO 2 content increases, the dipole interactions are observed in FePt/ZrO 2 films as the ZrO 2 content is more than 15%.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
