Title :
Ordering Enhancement of FePt Thin Films by Introducing Mo Layers
Author :
Hsiao, S.N. ; Chen, S.K. ; Yuan, F.T. ; Huang, H.W. ; Hsu, C.W. ; Yao, Y.D. ; Lee, H.Y.
Author_Institution :
Dept. of Mater. Sci. & Eng., Feng Chia Univ., Taichung
Abstract :
Single-layer FePt, bilayer Mo/FePt and FePt/Mo, and trilayer Mo/FePt/Mo samples were prepared by rf magnetron sputtering. Each layer of FePt and Mo in the studied samples is 20 nm in thickness. Samples were deposited onto corning 1737 glass substrate at room temperature, then annealed at 350degC and 400degC for a period of 10-120 min. Coercivities of the Mo-layer introduced samples were higher than those of single-layer FePt. X-ray diffraction data also indicate higher degree of ordering for Mo-layer introduced samples. We suggest that the incoherent FePt/Mo interface may induce extra nucleation sites for ordering transformation, thus lower the threshold of ordering temperature
Keywords :
X-ray diffraction; annealing; coercive force; iron alloys; magnetic multilayers; magnetic thin films; molybdenum; nucleation; platinum alloys; remanence; sputter deposition; 10 to 120 min; 20 nm; 293 to 298 K; 350 degC; 400 degC; Mo-FePt; SiO2; X-ray diffraction; annealing; bilayer; coercivity; glass substrate; magnetization; nucleation site; ordering temperature threshold; ordering transformation; remanence; rf magnetron sputtering; room temperature; thin films; trilayer; Annealing; Magnetic anisotropy; Magnetic films; Magnetic materials; Magnetic properties; Perpendicular magnetic anisotropy; Soft magnetic materials; Sputtering; Temperature; Transistors; Coercivity enhancement; FePt/Mo bilayer films; FePt/Mo interface; ordering enhancement;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.888485
