Magnetic properties of L10-Mn57Ga43/Co bilayer films with different Co thicknesses

R. Ranjbar; S. Mizukami; Y. Ando; T. Kubota; Q. L. Ma; X. M. Zhang; T. Miyazaki

doi:10.1016/j.jmmm.2013.07.008

Magnetic properties of L1₀-Mn₅₇Ga₄₃/Co bilayer films with different Co thicknesses

R. Ranjbar, S. Mizukami, Y. Ando, T. Kubota, Q. L. Ma, X. M. Zhang, T. Miyazaki

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

4 Citations (Scopus)

Abstract

In order to investigate the interlayer exchange coupling between L1 ₀-MnGa and Co bilayer films, we carried out Magneto Optical Kerr Effect (MOKE) measurement and magnetization measurement by VSM for L1 ₀-Mn₅₇Ga₄₃ (30 nm)/Co (0-20 nm) bilayer films without annealing and with annealing at 350 C. The Co thickness dependence of the MOKE signal is explained simply by adding Mn-Ga and Co MOKE signals for the unannealed samples, but not for the annealed samples. We found an inverted Kerr hysteresis curve for the annealed bilayer film with 20 nm Co thickness. This result indicates the antiferromagnetic interlayer exchange coupling between the Mn-Ga and Co layers.

Original language	English
Pages (from-to)	53-57
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	346
DOIs	https://doi.org/10.1016/j.jmmm.2013.07.008
Publication status	Published - 2013

Keywords

Interlayer exchange coupling
MOKE
MnGa film

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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@article{04eb7ccff6144ff6856c4384e1b28777,

title = "Magnetic properties of L10-Mn57Ga43/Co bilayer films with different Co thicknesses",

abstract = "In order to investigate the interlayer exchange coupling between L1 0-MnGa and Co bilayer films, we carried out Magneto Optical Kerr Effect (MOKE) measurement and magnetization measurement by VSM for L1 0-Mn57Ga43 (30 nm)/Co (0-20 nm) bilayer films without annealing and with annealing at 350 C. The Co thickness dependence of the MOKE signal is explained simply by adding Mn-Ga and Co MOKE signals for the unannealed samples, but not for the annealed samples. We found an inverted Kerr hysteresis curve for the annealed bilayer film with 20 nm Co thickness. This result indicates the antiferromagnetic interlayer exchange coupling between the Mn-Ga and Co layers.",

keywords = "Interlayer exchange coupling, MOKE, MnGa film",

author = "R. Ranjbar and S. Mizukami and Y. Ando and T. Kubota and Ma, {Q. L.} and Zhang, {X. M.} and T. Miyazaki",

note = "Funding Information: This work was partly supported by the Strategic Japanese-German cooperative program ASPIMATT (JST), Grant-in-Aid for Scientific Research, World Premier International Research Center Initiative (MEXT), NEDO Grant for Industrial Technology Research, JASSO scholarship, and the Casio foundation. ",

year = "2013",

doi = "10.1016/j.jmmm.2013.07.008",

language = "English",

volume = "346",

pages = "53--57",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

}

TY - JOUR

T1 - Magnetic properties of L10-Mn57Ga43/Co bilayer films with different Co thicknesses

AU - Ranjbar, R.

AU - Mizukami, S.

AU - Ando, Y.

AU - Kubota, T.

AU - Ma, Q. L.

AU - Zhang, X. M.

AU - Miyazaki, T.

N1 - Funding Information: This work was partly supported by the Strategic Japanese-German cooperative program ASPIMATT (JST), Grant-in-Aid for Scientific Research, World Premier International Research Center Initiative (MEXT), NEDO Grant for Industrial Technology Research, JASSO scholarship, and the Casio foundation.

PY - 2013

Y1 - 2013

N2 - In order to investigate the interlayer exchange coupling between L1 0-MnGa and Co bilayer films, we carried out Magneto Optical Kerr Effect (MOKE) measurement and magnetization measurement by VSM for L1 0-Mn57Ga43 (30 nm)/Co (0-20 nm) bilayer films without annealing and with annealing at 350 C. The Co thickness dependence of the MOKE signal is explained simply by adding Mn-Ga and Co MOKE signals for the unannealed samples, but not for the annealed samples. We found an inverted Kerr hysteresis curve for the annealed bilayer film with 20 nm Co thickness. This result indicates the antiferromagnetic interlayer exchange coupling between the Mn-Ga and Co layers.

AB - In order to investigate the interlayer exchange coupling between L1 0-MnGa and Co bilayer films, we carried out Magneto Optical Kerr Effect (MOKE) measurement and magnetization measurement by VSM for L1 0-Mn57Ga43 (30 nm)/Co (0-20 nm) bilayer films without annealing and with annealing at 350 C. The Co thickness dependence of the MOKE signal is explained simply by adding Mn-Ga and Co MOKE signals for the unannealed samples, but not for the annealed samples. We found an inverted Kerr hysteresis curve for the annealed bilayer film with 20 nm Co thickness. This result indicates the antiferromagnetic interlayer exchange coupling between the Mn-Ga and Co layers.

KW - Interlayer exchange coupling

KW - MOKE

KW - MnGa film

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U2 - 10.1016/j.jmmm.2013.07.008

DO - 10.1016/j.jmmm.2013.07.008

M3 - Article

AN - SCOPUS:84884487825

VL - 346

SP - 53

EP - 57

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

ER -