Magnetic properties and microstructure of (001) oriented Ag/FePt, Ag/FePt/Ag films

The Ag effect on magnetic properties and microstructure of FePt/Ag2Te particulate films

“…(0 0 1) textured FePt:TiO 2 , (Fe/Pt/SiO 2 ) x nanocomposite films, composed of isolated 5 nm grains of FePt have been reported [14,15]. In our previous work, the Ag/FePt bilayer and Ag/FePt/Ag trilayer annealed by a rapid thermal process (RTP) at 800 • C are continuous films with perpendicular magnetization [16]. Ag has a high thermal diffusivity that reduces the ordering temperature of FePt, yet enhances grain growth during RTP.…”

Effects of annealing temperature, atomic composition, film thickness on structure and magnetic properties of CoPt composite films

“…Considerable attention has recently been given to L1 0 structured CoPt and FePt films [1][2][3][4][5][6] and their nanoparticles [7,8] because of their potential applications in future ultrahigh-density magneticstorage media. Due to the large surface/volume ratio, nanoparticles oxidize easily in air and form oxides that tend to be typically antiferromagnetic [9].…”

“…The associated hard magnetic ordered L1 0 face-centered-tetragonal (FCT) phase can be obtained by annealing at moderately high temperature and the high magnetic anisotropy strongly correlates with the long-range order parameter of the L1 0 structure [1,3,6,[13][14][15]. However, when the growth temperature increases, the considerable particle coalescence leads to the increased switching volumes, which defeats the point of making small particles [16].…”

Dependence of magnetic properties on the film thickness and Pt atomic fraction of post-annealed Fe1−xPtx-C granular films on MgO(100) and SiO2/Si(100) substrates

“…Recently, the nonmagnetic matrixes including C, SiO 2 , TiO 2 , Ta 2 O 5 and SiN x have been used to isolate the FePt grains for decreasing the signal-to-noise ratio [12][13][14][15][16]. The metal elements such as Cr, Cu, Ru and Ag were added in the FePt alloy to improve the phase transition and the ordering of the fct phase [17][18][19][20]. Meanwhile, multiple laser pulsing and ultrafast heating were used to make the phase transition into the ordered fct FePt phase [21,22].…”