Microstructure and coercivity of granular FePt–AlN thin films

Granular $\hbox{Co}_{3}\hbox{Pt}$ Thin Films With Perpendicular Hard Magnetic Properties for Perpendicular Magnetic Recording Media

“…The granular isolated magnetic grains dispersed in a non-magnetic matrix [7], [8] have been verified that they can reduce media noise of magnetic films.…”

Composition and film thickness effects on microstructure and magnetic properties of ordered L10-structured Fe100−xPtx films

“…The FePt films fabricated by the magnetron sputtering without substrate heating generally have a disordered face-centered-cubic (fcc) structure. High-temperature annealing above 500 • C is necessary for the FePt films to transform from the disordered fcc structure into the ordered fct structure [2,3], and above 650 • C for the FePt based nanocomposite films [4][5][6][7][8]. The third element doped into the FePt films makes the transformation temperature decrease because of the increase of the diffusivities of Fe and Pt atoms [9,10].…”

Structure and magnetic properties of FePt and FePt/C thin films by post-annealing

“…On the other hand, ultrahigh-density recording media would require a very small grain size, grain dispersion and grain isolation. In order to reduce the media noise of the films, various granular films with the magnetic particles isolated in a non-magnetic matrix are proposed lately, such as FePt nanoparticles in BN [3], Si 3 N 4 [6], SiO 2 [7], B 2 O 3 [8], AlN [9] and C [10].…”