Thickness Dependence of (001) Texture Evolution and Magnetic Properties of Sputter-Deposited FePt:MgO Nanocomposite Films

Kim, Han Jae; Kim, Ki-Soo; Lee, Seong-Rae; Jeung, Won Young

doi:10.1109/tmag.2008.2001608

Cited by 4 publications

(2 citation statements)

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“…To develop the ͑200͒ texture of the MgO layers sufficiently, the thickness of the MgO layers is critical ͑3.2 nm was optimal under our conditions͒. 24 This result is also consistent with the XRD and texture coefficient ͑TC͒ results shown in Fig. To develop the L1 0 FePt ͑002͒ texture during ordering, the heteroepitaxial growth of the fcc FePt ͑200͒ film on the MgO ͑200͒ layer in the as-deposited state is a prerequisite.…”

Section: Methodssupporting

confidence: 84%

“…In the as-deposited state, only the MgO ͑200͒ and FePt ͑200͒ peaks appeared, as shown in the inset of Fig. 24 All of the films prepared by annealing show an almost perfect ͑001͒ preferred orientation, as shown in Fig. The MgO ͑200͒ texture usually develops easily when MgO is deposited on an amorphous substrate such as SiO 2 , because the close-packed ͑200͒ plane has the lowest surface energy.…”

Section: Methodsmentioning

confidence: 92%

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Magnetic and microstructural properties of Cu-doped FePt-Zr/MgO multilayer films

Jung

Kim

Lee

et al. 2010

Journal of Applied Physics

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Structural and magnetic studies of nanocomposite FePt-MgO films for perpendicular magnetic recording applications J. Appl. Phys. 95, 7273 (2004);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 ͑001͒ texture on the MgO ͑200͒ layer, because of the increase in the a-lattice parameter of L1 0 Cu-doped FePt ͑002͒, which decreased the lattice mismatch with the MgO ͑200͒ 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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Section: Methodssupporting

confidence: 84%

Section: Methodsmentioning

confidence: 92%