Determining the low-coercivity temperature coefficient in FePt (fct)/FePt (fcc) nanocomposite films

Coercivity and exchange coupling in PrCo:Co nanocomposite films

Assembly of high-anisotropy L10 FePt nanocomposite films

In this paper we report results on the synthesis and magnetic properties of L10 FePt nanocomposite fi lms. Three fabrication methods have been developed to produce high-anisptropy FePt fi lms: non-epitaxial growth of (0 0 1)-oriented FePt:X (X=Ag, C) composite fi lms that might be used for perpendicular media; monodispersed FePt(CFx) core–shell nanocluster-assembled fi lms grown with a gas-aggr...

Atomic Ordering and Coercivity Mechanism in FePt and CoPt Polycrystalline Thin Films

40 nm thick CoPt and FePt films were prepared on oxidized Si substrates with 10 nm MgO underlayers. The maximum coercivity ( ) for CoPt films was found to be 10 kOe after annealing at 700 C for 20–30 minutes (min). Structural analysis showed a significant amount of FCC phase as well as the ordered L10 phase in these films. FePt films showed an abrupt increase of ordered volume fraction and in t...

Curie temperature of FePt:B2O3 nanocomposite films

Perpendicular Magnetization Behavior of Low- Temperature Ordered FePt Films with Insertion of Ag Nanolayers

FePt-Ag nanocomposite films with large perpendicular magnetic anisotropy have been fabricated by alternate-atomic-layer electron beam evaporation onto MgO(100) substrates at the low temperature of 300 °C. Their magnetization behavior and microstructure have been studied. The surface topography was observed and varied from continuous to nanogranular microstructures with insertion of Ag nanolayer...