Perpendicular magnetic anisotropy in single-crystal Co50Pt50/MgO(100) films

Kim, P. D.; Turpanov, I. A.; Stolyar, S. V.; Исхаков, Р. С.; Yushkov, V. I.; Beten’kova, A. Ya.; Li, L. A.; Bondareva, E. V.; Isaeva, T. N.; Karpenko, M.M.

doi:10.1134/1.1736910

Cited by 11 publications

(6 citation statements)

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“…Studies of the correlations between crystallographic as well as morphological structure and magnetic coercivity of CoPt and FePt alloy films have been of considerable interest in recent years due to the strong perpendicular magnetic anisotropy and chemical inertness of these alloys which make them suitable for high density recording applications 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17 . The key structural feature responsible for magnetic anisotropy of these systems is the ordering of Pt and Co or Fe atoms in the crystal lattice.…”

Section: Introductionmentioning

confidence: 99%

Correlations between morphology, crystal structure, and magnetization of epitaxial cobalt-platinum films grown with pulsed laser ablation

Rakshit

Bose

Sharma

et al. 2008

Journal of Applied Physics

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The effects of growth rate (G r ), deposition temperature (T d ), film thickness (t F ), and substrate induced strain (ǫ) on morphological, crystallographic and magnetic characteristics of equiatomic CoPt epitaxial films synthesized with pulsed laser deposition (PLD) are investigated. The (001) oriented single crystal substrates of MgO, SrTiO 3 and LaAlO 3 provide different degree of epitaxial strain for growth of the disordered face centered cubic (fcc) and ordered face centered tetragonal (L1 0 ) phases of CoPt. The films deposited at T d ≈ 600 0 C on all three substrates are fcc with in-plane magnetization and a narrow hysteresis loop of width ≈ 200 Oe. The L1 0 phase, stabilized only at T d ≥ 700 0 C becomes predominantly c-axis oriented as T d is increased to 800 0 C. While

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Section: Introductionmentioning

confidence: 99%

Correlations between morphology, crystal structure, and magnetization of epitaxial cobalt-platinum films grown with pulsed laser ablation

Rakshit

Bose

Sharma

et al. 2008

Journal of Applied Physics

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“…5,6 Many structural parameters are determining for the film quality. 5,6 Many structural parameters are determining for the film quality.…”

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confidence: 99%

Depth-dependent chemical and magnetic local orders in thin magnetic films

Souza-Neto

Ramos

Tolentino

et al. 2006

Applied Physics Letters

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The authors report on the use of x-ray absorption spectroscopy with resolved grazing incidence to clarify the thickness-dependent magnetic properties in nanometric CoPt films. They show that in the thinnest samples the chemical order that induces the perpendicular magnetic anisotropy has no depth dependence. However, in the thicker samples the chemical order is depth dependent along the film thickness, with a disordered layer close to the substrate. The ability of the experimental approach to address the depth dependence of the local structural parameters makes it a unique tool, suitable for nanometric structure where this dependence is an important problem.

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“…Usually, CoPt thin films deposited by magnetron sputtering tend to grow at a (1 1 1) orientation, placing the c-axes of the grains at an angle of 368 above the film plane [4]. CoPt can grow epitaxially on the Si (0 0 1) [5] and MgO (1 0 0) [6] single-crystal substrates with the c-axes of the grains in the film normal direction, resulting in perpendicular magnetic anisotropy. However, it is more practical to adopt the glass substrates for the magnetic hard disk.…”

Section: Introductionmentioning

confidence: 99%