Antiferromagnetic coupling in perpendicularly magnetized cubic and tetragonal Heusler bilayers

R. Ranjbar; K. Suzuki; A. Sugihara; Q. L. Ma; X. M. Zhang; T. Miyazaki; Y. Ando; S. Mizukami

doi:10.1016/j.matlet.2015.07.118

Antiferromagnetic coupling in perpendicularly magnetized cubic and tetragonal Heusler bilayers

R. Ranjbar, K. Suzuki, A. Sugihara, Q. L. Ma, X. M. Zhang, T. Miyazaki, Y. Ando, S. Mizukami

Tohoku University

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

11 Citations (Scopus)

Abstract

Epitaxial bilayer of tetragonal Heusler-like D0₂₂-MnGa and cubic Heusler L2₁-Co₂MnSi have been successfully grown even for an unannealed sample. The interfacial exchange coupling (J_ex) for samples annealed at different temperatures was evaluated from the magnetic hysteresis loop. Antiferromagnetic J_ex was observed in the interfaces of cubic Heusler Co₂MnSi and tetragonal D0₂₂-MnGa layers. The evaluated J_ex is -3.2 erg/cm² for a bilayer film annealed at 400°C, being comparable to that for the FeCo/MnGa interface.

Original language	English
Pages (from-to)	88-91
Number of pages	4
Journal	Materials Letters
Volume	160
DOIs	https://doi.org/10.1016/j.matlet.2015.07.118
Publication status	Published - 2015 Jul 27

Keywords

Co<inf>2</inf>MnSi film
Interfacial exchange coupling
MnGa film

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10.1016/j.matlet.2015.07.118

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title = "Antiferromagnetic coupling in perpendicularly magnetized cubic and tetragonal Heusler bilayers",

abstract = "Epitaxial bilayer of tetragonal Heusler-like D022-MnGa and cubic Heusler L21-Co2MnSi have been successfully grown even for an unannealed sample. The interfacial exchange coupling (Jex) for samples annealed at different temperatures was evaluated from the magnetic hysteresis loop. Antiferromagnetic Jex was observed in the interfaces of cubic Heusler Co2MnSi and tetragonal D022-MnGa layers. The evaluated Jex is -3.2 erg/cm2 for a bilayer film annealed at 400°C, being comparable to that for the FeCo/MnGa interface.",

keywords = "Co<inf>2</inf>MnSi film, Interfacial exchange coupling, MnGa film",

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

note = "Funding Information: This work was partially supported by ASPIMATT (JST) , Asahi Glass Foundation and a Grant-in-Aid for Scientific Research (No. 24686001 ). R.R. also thanks Y. Kondo for his technical assistance and the WPI program and acknowledges a JGC-S scholarship (Nikki). Publisher Copyright: {\textcopyright} 2015, Elsevier B.V. All rights reserved.",

year = "2015",

month = jul,

day = "27",

doi = "10.1016/j.matlet.2015.07.118",

language = "English",

volume = "160",

pages = "88--91",

journal = "Materials Letters",

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publisher = "Elsevier",

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T1 - Antiferromagnetic coupling in perpendicularly magnetized cubic and tetragonal Heusler bilayers

AU - Ranjbar, R.

AU - Suzuki, K.

AU - Sugihara, A.

AU - Ma, Q. L.

AU - Zhang, X. M.

AU - Miyazaki, T.

AU - Ando, Y.

AU - Mizukami, S.

N1 - Funding Information: This work was partially supported by ASPIMATT (JST) , Asahi Glass Foundation and a Grant-in-Aid for Scientific Research (No. 24686001 ). R.R. also thanks Y. Kondo for his technical assistance and the WPI program and acknowledges a JGC-S scholarship (Nikki). Publisher Copyright: © 2015, Elsevier B.V. All rights reserved.

PY - 2015/7/27

Y1 - 2015/7/27

N2 - Epitaxial bilayer of tetragonal Heusler-like D022-MnGa and cubic Heusler L21-Co2MnSi have been successfully grown even for an unannealed sample. The interfacial exchange coupling (Jex) for samples annealed at different temperatures was evaluated from the magnetic hysteresis loop. Antiferromagnetic Jex was observed in the interfaces of cubic Heusler Co2MnSi and tetragonal D022-MnGa layers. The evaluated Jex is -3.2 erg/cm2 for a bilayer film annealed at 400°C, being comparable to that for the FeCo/MnGa interface.

AB - Epitaxial bilayer of tetragonal Heusler-like D022-MnGa and cubic Heusler L21-Co2MnSi have been successfully grown even for an unannealed sample. The interfacial exchange coupling (Jex) for samples annealed at different temperatures was evaluated from the magnetic hysteresis loop. Antiferromagnetic Jex was observed in the interfaces of cubic Heusler Co2MnSi and tetragonal D022-MnGa layers. The evaluated Jex is -3.2 erg/cm2 for a bilayer film annealed at 400°C, being comparable to that for the FeCo/MnGa interface.

KW - Co<inf>2</inf>MnSi film

KW - Interfacial exchange coupling

KW - MnGa film

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DO - 10.1016/j.matlet.2015.07.118

M3 - Article

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SN - 0167-577X

VL - 160

SP - 88

EP - 91

JO - Materials Letters

JF - Materials Letters

ER -

Antiferromagnetic coupling in perpendicularly magnetized cubic and tetragonal Heusler bilayers

Abstract

Keywords

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