Microstructure and magnetization reversal of L1 0-FePt/[Co/Pt] N exchange coupled composite films

H. H. Guo; J. L. Liao; B. Ma; Z. Z. Zhang; Q. Y. Jin; H. Wang; J. P. Wang

doi:10.1063/1.3700865

Microstructure and magnetization reversal of L1 ₀-FePt/[Co/Pt] _N exchange coupled composite films

H. H. Guo, J. L. Liao, B. Ma, Z. Z. Zhang, Q. Y. Jin, H. Wang, J. P. Wang

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

Two series of perpendicular exchange coupled composites (ECC) films are prepared by dc magnetron sputtering, FePt(5)/[Co(0.2)/Pt(0.3)] _N (ECC-I-N) and FePt(5)/[Co(0.2)/Pt(0.6)] _N (ECC-II-N), respectively. Structure analyses reveal the epitaxial growth on (001) oriented L1 ₀ FePt island-like grains of [Co/Pt] _N with (200) orientation. Coercivity H _C and remanent coercivity H _CR of both series samples decrease sharply compared to FePt, with the increase of the thickness of [Co/Pt] _N. The angular dependence of H _CR shows excellent angular tolerance.

Original language	English (US)
Article number	142406
Journal	Applied Physics Letters
Volume	100
Issue number	14
DOIs	https://doi.org/10.1063/1.3700865
State	Published - Apr 2 2012

Bibliographical note

Funding Information:
This work is partially supported by the NSF of China (Grant Nos. 51071046, 61078030, 11074046, 11174056, and 51171047), the National Basic Research Program of China (2009CB929201), and the Characterization Facility, University of Minnesota, a member of the NSF-funded Materials Research Facilities Network (www.mrfn.org) via the NSF MRSEC program under Award No. DMR-0819885.

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title = "Microstructure and magnetization reversal of L1 0-FePt/[Co/Pt] N exchange coupled composite films",

abstract = "Two series of perpendicular exchange coupled composites (ECC) films are prepared by dc magnetron sputtering, FePt(5)/[Co(0.2)/Pt(0.3)] N (ECC-I-N) and FePt(5)/[Co(0.2)/Pt(0.6)] N (ECC-II-N), respectively. Structure analyses reveal the epitaxial growth on (001) oriented L1 0 FePt island-like grains of [Co/Pt] N with (200) orientation. Coercivity H C and remanent coercivity H CR of both series samples decrease sharply compared to FePt, with the increase of the thickness of [Co/Pt] N. The angular dependence of H CR shows excellent angular tolerance.",

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note = "Funding Information: This work is partially supported by the NSF of China (Grant Nos. 51071046, 61078030, 11074046, 11174056, and 51171047), the National Basic Research Program of China (2009CB929201), and the Characterization Facility, University of Minnesota, a member of the NSF-funded Materials Research Facilities Network (www.mrfn.org) via the NSF MRSEC program under Award No. DMR-0819885. ",

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AU - Guo, H. H.

AU - Liao, J. L.

AU - Ma, B.

AU - Zhang, Z. Z.

AU - Jin, Q. Y.

AU - Wang, H.

AU - Wang, J. P.

N1 - Funding Information: This work is partially supported by the NSF of China (Grant Nos. 51071046, 61078030, 11074046, 11174056, and 51171047), the National Basic Research Program of China (2009CB929201), and the Characterization Facility, University of Minnesota, a member of the NSF-funded Materials Research Facilities Network (www.mrfn.org) via the NSF MRSEC program under Award No. DMR-0819885.

PY - 2012/4/2

Y1 - 2012/4/2

N2 - Two series of perpendicular exchange coupled composites (ECC) films are prepared by dc magnetron sputtering, FePt(5)/[Co(0.2)/Pt(0.3)] N (ECC-I-N) and FePt(5)/[Co(0.2)/Pt(0.6)] N (ECC-II-N), respectively. Structure analyses reveal the epitaxial growth on (001) oriented L1 0 FePt island-like grains of [Co/Pt] N with (200) orientation. Coercivity H C and remanent coercivity H CR of both series samples decrease sharply compared to FePt, with the increase of the thickness of [Co/Pt] N. The angular dependence of H CR shows excellent angular tolerance.

AB - Two series of perpendicular exchange coupled composites (ECC) films are prepared by dc magnetron sputtering, FePt(5)/[Co(0.2)/Pt(0.3)] N (ECC-I-N) and FePt(5)/[Co(0.2)/Pt(0.6)] N (ECC-II-N), respectively. Structure analyses reveal the epitaxial growth on (001) oriented L1 0 FePt island-like grains of [Co/Pt] N with (200) orientation. Coercivity H C and remanent coercivity H CR of both series samples decrease sharply compared to FePt, with the increase of the thickness of [Co/Pt] N. The angular dependence of H CR shows excellent angular tolerance.

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