Effects of Ti underlayer on the degree of order of Fe50Pt50 films

Effect of Pt underlayer on the coercivity of FePt sputtered film

“…Among the above, the performance for three of them [18][19][20] is similar to our previous data [16]. In this study, we select Pt as the underlayer material for the FePt hard magnetic film.…”

“…Besides the aforementioned underlayers Cu, Ag and CrRu, different metallic underlayers with various CTEs were reported, such as Ti [18], Ag [19] and Ag top layer [20], etc. Among the above, the performance for three of them [18][19][20] is similar to our previous data [16].…”

Effects of Ru and Ag cap layers on microstructure and magnetic properties of FePt ultrathin films

“…Several methods have been used for reducing the ordering temperature and enhancing the perpendicular magnetic anisotropy (PMA) of the L 1 0 phase FePt thin films, for example, i) introduction of an underlayer, ii) introduction of a cap layer, and iii) addition of a third element to form a ternary alloy compound. For the underlayer method, different underlayers have been investigated, such as Ag [ 4 , 5 ], Pt [ 6 ], Hf [ 7 ], Al [ 8 ], and Ti [ 9 , 10 ]. For the cap layer method, the Ag [ 11 ], Au [ 12 ], etc.…”

Perpendicular Magnetic Anisotropy in FePt Patterned Media Employing a CrV Seed Layer

“…This material undergoes a transition from chemically disordered face-centered cubic phase (FCC, A 1 phase) to ordered face-centered tetragonal phase (FCT, L 1 0 phase) at a specific temperature, and the transition temperature and perpendicular anisotropy are known to depend on the buffer layer and process employed. A variety of buffer layers have been introduced on Si or glass substrates to grow high quality FCT structures at low temperatures, including Pt, Au, Ag, Ti, and MgO [ 13 - 16 ]. Although L 1 0 FePt films on these buffer layers demonstrated an increase in coercivity with respect to the buffer-free films, the ratio of out-of-plane to in-plane coercivities has generally been smaller than 3.…”