Interlayer thickness dependence of 90° exchange coupling in Co2 MnAl/Cr/ Co2 MnAl epitaxial trilayer structures

S. Bosu; Y. Sakuraba; K. Saito; H. Wang; S. Mitani; K. Takanashi; C. Y. You; K. Hono

doi:10.1063/1.3070610

Interlayer thickness dependence of 90° exchange coupling in Co2 MnAl/Cr/ Co2 MnAl epitaxial trilayer structures

S. Bosu, Y. Sakuraba, K. Saito, H. Wang, S. Mitani, K. Takanashi, C. Y. You, K. Hono

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7 Citations (Scopus)

Abstract

The spacer layer thickness dependence of interlayer exchange coupling has been investigated in the fully epitaxial trilayers of the Co2 MnAl (CMA)/Cr/CMA structure. A series of high-quality samples of CMA (20 nm)/Cr (tCr =0.3-8.1 nm) /CMA (10 nm) trilayers was prepared on a MgO substrate by ultrahigh vacuum compatible dc sputtering. Comparison of the results of the experiments and the simulations of magnetization curves revealed novel behavior, dominating the 90° coupling and the absence of 180° coupling. No clear oscillation, only a peak of the 90° coupling strength (J2 ∼-0.68 erg/ cm2), was observed at tCr =1.2 nm.

Original language	English
Article number	07C710
Journal	Journal of Applied Physics
Volume	105
Issue number	7
DOIs	https://doi.org/10.1063/1.3070610
Publication status	Published - 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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@article{e8074734536345d2a294c73e331eaab3,

title = "Interlayer thickness dependence of 90° exchange coupling in Co2 MnAl/Cr/ Co2 MnAl epitaxial trilayer structures",

abstract = "The spacer layer thickness dependence of interlayer exchange coupling has been investigated in the fully epitaxial trilayers of the Co2 MnAl (CMA)/Cr/CMA structure. A series of high-quality samples of CMA (20 nm)/Cr (tCr =0.3-8.1 nm) /CMA (10 nm) trilayers was prepared on a MgO substrate by ultrahigh vacuum compatible dc sputtering. Comparison of the results of the experiments and the simulations of magnetization curves revealed novel behavior, dominating the 90° coupling and the absence of 180° coupling. No clear oscillation, only a peak of the 90° coupling strength (J2 ∼-0.68 erg/ cm2), was observed at tCr =1.2 nm.",

author = "S. Bosu and Y. Sakuraba and K. Saito and H. Wang and S. Mitani and K. Takanashi and You, {C. Y.} and K. Hono",

note = "Funding Information: The present study was supported by a Grant-in-Aid for Scientific Research in Priority Area “Creation and control of spin current” (Grant No. 19048004) and Young Scientists (B) (Grant No. 20760005) by MEXT, Japan. ",

year = "2009",

doi = "10.1063/1.3070610",

language = "English",

volume = "105",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "7",

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TY - JOUR

T1 - Interlayer thickness dependence of 90° exchange coupling in Co2 MnAl/Cr/ Co2 MnAl epitaxial trilayer structures

AU - Bosu, S.

AU - Sakuraba, Y.

AU - Saito, K.

AU - Wang, H.

AU - Mitani, S.

AU - Takanashi, K.

AU - You, C. Y.

AU - Hono, K.

N1 - Funding Information: The present study was supported by a Grant-in-Aid for Scientific Research in Priority Area “Creation and control of spin current” (Grant No. 19048004) and Young Scientists (B) (Grant No. 20760005) by MEXT, Japan.

PY - 2009

Y1 - 2009

N2 - The spacer layer thickness dependence of interlayer exchange coupling has been investigated in the fully epitaxial trilayers of the Co2 MnAl (CMA)/Cr/CMA structure. A series of high-quality samples of CMA (20 nm)/Cr (tCr =0.3-8.1 nm) /CMA (10 nm) trilayers was prepared on a MgO substrate by ultrahigh vacuum compatible dc sputtering. Comparison of the results of the experiments and the simulations of magnetization curves revealed novel behavior, dominating the 90° coupling and the absence of 180° coupling. No clear oscillation, only a peak of the 90° coupling strength (J2 ∼-0.68 erg/ cm2), was observed at tCr =1.2 nm.

AB - The spacer layer thickness dependence of interlayer exchange coupling has been investigated in the fully epitaxial trilayers of the Co2 MnAl (CMA)/Cr/CMA structure. A series of high-quality samples of CMA (20 nm)/Cr (tCr =0.3-8.1 nm) /CMA (10 nm) trilayers was prepared on a MgO substrate by ultrahigh vacuum compatible dc sputtering. Comparison of the results of the experiments and the simulations of magnetization curves revealed novel behavior, dominating the 90° coupling and the absence of 180° coupling. No clear oscillation, only a peak of the 90° coupling strength (J2 ∼-0.68 erg/ cm2), was observed at tCr =1.2 nm.

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U2 - 10.1063/1.3070610

DO - 10.1063/1.3070610

M3 - Article

AN - SCOPUS:65249114923

SN - 0021-8979

VL - 105

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

M1 - 07C710

ER -

Interlayer thickness dependence of 90° exchange coupling in Co2 MnAl/Cr/ Co2 MnAl epitaxial trilayer structures

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