Annealing environment effects on the microstructure and magnetic properties of FePt–TiO2 and CoPt–TiO2 nanocomposite films

Effect of Annealing Temperature on the Structure, optical and Electronic Properties of \(\text{TiO}_{2}\) Made by Thermal Treatment of \(\text{Ti}\)

“…This material is known to exist in several forms, among the most abundant are anatase, rutile and brookite [13]. Anatase TiO 2 films have numerous interesting applications in optical coatings, optical waveguides, photo-decomposition of environmental pollutants, sensing, solar cells and electronic devices, etc [16,17,21]. There are numerous reports describing the fabrication of Ti thin films using techniques such as electron beam deposition [7], doctor blading [14], magnetron sputtering [15] sol-gel processing [6], surfactant template selfassembly [1], pulsed laser deposition [3], spray pyrolysis, etc.…”

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

“…ordered fct structure [8][9][10][11]. 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].…”