L1 0-FePt based exchange coupled composite films with soft [Co/Ni] N multilayers

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

doi:10.1063/1.4718580

L1 ₀-FePt based exchange coupled composite films with soft [Co/Ni] _N multilayers

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

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

14 Scopus citations

Abstract

Perpendicular exchange coupled composite structures were prepared, utilizing L1 ₀-FePt as the magnetic hard layer and [Co/Ni] _N multilayers as the soft layer. Sharp reduction of the switching field was observed with increasing periodic number N of [Co/Ni] _N multilayers. By inserting a thin Pt interlayer between L1 ₀-FePt and [Co/Ni] _N layers, it is found that in order to get the best of exchange coupled composites, different interlayer coupling stiffness was required in the composites with different soft layer thickness. Furthermore, the angular variation of the coercivity and remanent coercivity shows high angular tolerance to applied field angle, and reveals the evolution of magnetization reversal from incoherent rotational mode to dominant wall motion with increasing thickness of soft layer.

Original language	English (US)
Article number	103916
Journal	Journal of Applied Physics
Volume	111
Issue number	10
DOIs	https://doi.org/10.1063/1.4718580
State	Published - May 15 2012

Bibliographical note

Funding Information:
I.I. Ivanova thanks the Belgian Program of Interuniversity Attraction Poles (PAl), Haldor Topsoe A/S and Laboratory of Catalysis (FUNDP) for a research postdoctoral position. The authors thank Dr. V. Ivanov for characterization of the catalyst samples by FI'IR and G. Daelen for his skillful technical assistance.

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10.1063/1.4718580

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@article{ce60e082761044708d405c69ab48901f,

title = "L1 0-FePt based exchange coupled composite films with soft [Co/Ni] N multilayers",

abstract = "Perpendicular exchange coupled composite structures were prepared, utilizing L1 0-FePt as the magnetic hard layer and [Co/Ni] N multilayers as the soft layer. Sharp reduction of the switching field was observed with increasing periodic number N of [Co/Ni] N multilayers. By inserting a thin Pt interlayer between L1 0-FePt and [Co/Ni] N layers, it is found that in order to get the best of exchange coupled composites, different interlayer coupling stiffness was required in the composites with different soft layer thickness. Furthermore, the angular variation of the coercivity and remanent coercivity shows high angular tolerance to applied field angle, and reveals the evolution of magnetization reversal from incoherent rotational mode to dominant wall motion with increasing thickness of soft layer.",

author = "Guo, {H. H.} and Liao, {J. L.} and B. Ma and Zhang, {Z. Z.} and Jin, {Q. Y.} and Rui, {W. B.} and J. Du and H. Wang and Wang, {J. P.}",

note = "Funding Information: I.I. Ivanova thanks the Belgian Program of Interuniversity Attraction Poles (PAl), Haldor Topsoe A/S and Laboratory of Catalysis (FUNDP) for a research postdoctoral position. The authors thank Dr. V. Ivanov for characterization of the catalyst samples by FI'IR and G. Daelen for his skillful technical assistance.",

year = "2012",

month = may,

day = "15",

doi = "10.1063/1.4718580",

language = "English (US)",

volume = "111",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

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TY - JOUR

T1 - L1 0-FePt based exchange coupled composite films with soft [Co/Ni] N multilayers

AU - Guo, H. H.

AU - Liao, J. L.

AU - Ma, B.

AU - Zhang, Z. Z.

AU - Jin, Q. Y.

AU - Rui, W. B.

AU - Du, J.

AU - Wang, H.

AU - Wang, J. P.

N1 - Funding Information: I.I. Ivanova thanks the Belgian Program of Interuniversity Attraction Poles (PAl), Haldor Topsoe A/S and Laboratory of Catalysis (FUNDP) for a research postdoctoral position. The authors thank Dr. V. Ivanov for characterization of the catalyst samples by FI'IR and G. Daelen for his skillful technical assistance.

PY - 2012/5/15

Y1 - 2012/5/15

N2 - Perpendicular exchange coupled composite structures were prepared, utilizing L1 0-FePt as the magnetic hard layer and [Co/Ni] N multilayers as the soft layer. Sharp reduction of the switching field was observed with increasing periodic number N of [Co/Ni] N multilayers. By inserting a thin Pt interlayer between L1 0-FePt and [Co/Ni] N layers, it is found that in order to get the best of exchange coupled composites, different interlayer coupling stiffness was required in the composites with different soft layer thickness. Furthermore, the angular variation of the coercivity and remanent coercivity shows high angular tolerance to applied field angle, and reveals the evolution of magnetization reversal from incoherent rotational mode to dominant wall motion with increasing thickness of soft layer.

AB - Perpendicular exchange coupled composite structures were prepared, utilizing L1 0-FePt as the magnetic hard layer and [Co/Ni] N multilayers as the soft layer. Sharp reduction of the switching field was observed with increasing periodic number N of [Co/Ni] N multilayers. By inserting a thin Pt interlayer between L1 0-FePt and [Co/Ni] N layers, it is found that in order to get the best of exchange coupled composites, different interlayer coupling stiffness was required in the composites with different soft layer thickness. Furthermore, the angular variation of the coercivity and remanent coercivity shows high angular tolerance to applied field angle, and reveals the evolution of magnetization reversal from incoherent rotational mode to dominant wall motion with increasing thickness of soft layer.

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