Magnetic and microstructural properties of Cu-doped FePt-Zr/MgO multilayer films
- Magnetic and microstructural properties of Cu-doped FePt-Zr/MgO multilayer films
- 정준호; 김기수; 이성래; 정원용
- Issue Date
- Journal of applied physics
- VOL 108, NO 10, 103913-1-103913-5
- The magnetic and microstructural properties of Zr-doped FePt/MgO and Cu-doped FePt-Zr/MgO
nanocomposite films were investigated. The samples exhibited out-of-plane anisotropy after
annealing for only 5 min and their grain growth was restrained by Zr doping. The Cu-doped
FePt-Zr/MgO films showed an increased tendency to grow with the (001) texture on the MgO (200)
layer, because of the increase in the a-lattice parameter of L10 Cu-doped FePt (002), which
decreased the lattice mismatch with the MgO (200) layers. The Curie temperature decreases by
about 145 K owing to the effects of Cu doing. Although the addition of Cu reduces the perpendicular
magnetic anisotropy and the ability to restrain the grain growth, the addition of both Zr and Cu had
a complementary effect on the magnetic and microstructural properties of FePt.
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