A 4-Fold-Symmetry Hexagonal Ruthenium for Magnetic Heterostructures Exhibiting Enhanced Perpendicular Magnetic Anisotropy and Tunnel Magnetoresistance

Zhenchao Wen; Hiroaki Sukegawa; Takao Furubayashi; Jungwoo Koo; Koichiro Inomata; Seiji Mitani; Jason Paul Hadorn; Tadakatsu Ohkubo; Kazuhiro Hono

doi:10.1002/adma.201401959

A 4-Fold-Symmetry Hexagonal Ruthenium for Magnetic Heterostructures Exhibiting Enhanced Perpendicular Magnetic Anisotropy and Tunnel Magnetoresistance

Zhenchao Wen, Hiroaki Sukegawa, Takao Furubayashi, Jungwoo Koo, Koichiro Inomata, Seiji Mitani, Jason Paul Hadorn, Tadakatsu Ohkubo, Kazuhiro Hono

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

76 Citations (Scopus)

Abstract

A 4-fold-symmetry hexagonal Ru emerging in epitaxial MgO/Ru/Co₂FeAl/MgO heterostructures is reported, in which an approximately Ru(022¯3) growth attributes to the lattice matching between MgO, Ru, and Co₂FeAl. Perpendicular magnetic anisotropy of the Co₂FeAl/MgO interface is substantially enhanced. The magnetic tunnel junctions (MTJs) incorporating this structure give rise to the largest tunnel magnetoresistance for perpendicular MTJs using low damping Heusler alloys.

Original language	English
Pages (from-to)	6483-6490
Number of pages	8
Journal	Advanced Materials
Volume	26
Issue number	37
DOIs	https://doi.org/10.1002/adma.201401959
Publication status	Published - 2014 Oct 1
Externally published	Yes

Keywords

4-fold-symmetry hexagonal ruthenium
magnetic heterostructures
perpendicular magnetic anisotropy
tunnel magnetoresistance

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1002/adma.201401959

Cite this

@article{35d3ac591304448696f42fbe40d439e5,

title = "A 4-Fold-Symmetry Hexagonal Ruthenium for Magnetic Heterostructures Exhibiting Enhanced Perpendicular Magnetic Anisotropy and Tunnel Magnetoresistance",

abstract = "A 4-fold-symmetry hexagonal Ru emerging in epitaxial MgO/Ru/Co2FeAl/MgO heterostructures is reported, in which an approximately Ru(022¯3) growth attributes to the lattice matching between MgO, Ru, and Co2FeAl. Perpendicular magnetic anisotropy of the Co2FeAl/MgO interface is substantially enhanced. The magnetic tunnel junctions (MTJs) incorporating this structure give rise to the largest tunnel magnetoresistance for perpendicular MTJs using low damping Heusler alloys.",

keywords = "4-fold-symmetry hexagonal ruthenium, magnetic heterostructures, perpendicular magnetic anisotropy, tunnel magnetoresistance",

author = "Zhenchao Wen and Hiroaki Sukegawa and Takao Furubayashi and Jungwoo Koo and Koichiro Inomata and Seiji Mitani and Hadorn, {Jason Paul} and Tadakatsu Ohkubo and Kazuhiro Hono",

note = "Funding Information: This work was partly supported by the Japan Science and Technology Agency, CREST, and JSPS KAKENHI Grant Number 23246006. Publisher Copyright: {\textcopyright} 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

year = "2014",

month = oct,

day = "1",

doi = "10.1002/adma.201401959",

language = "English",

volume = "26",

pages = "6483--6490",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-VCH Verlag",

number = "37",

}

TY - JOUR

T1 - A 4-Fold-Symmetry Hexagonal Ruthenium for Magnetic Heterostructures Exhibiting Enhanced Perpendicular Magnetic Anisotropy and Tunnel Magnetoresistance

AU - Wen, Zhenchao

AU - Sukegawa, Hiroaki

AU - Furubayashi, Takao

AU - Koo, Jungwoo

AU - Inomata, Koichiro

AU - Mitani, Seiji

AU - Hadorn, Jason Paul

AU - Ohkubo, Tadakatsu

AU - Hono, Kazuhiro

N1 - Funding Information: This work was partly supported by the Japan Science and Technology Agency, CREST, and JSPS KAKENHI Grant Number 23246006. Publisher Copyright: © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

PY - 2014/10/1

Y1 - 2014/10/1

N2 - A 4-fold-symmetry hexagonal Ru emerging in epitaxial MgO/Ru/Co2FeAl/MgO heterostructures is reported, in which an approximately Ru(022¯3) growth attributes to the lattice matching between MgO, Ru, and Co2FeAl. Perpendicular magnetic anisotropy of the Co2FeAl/MgO interface is substantially enhanced. The magnetic tunnel junctions (MTJs) incorporating this structure give rise to the largest tunnel magnetoresistance for perpendicular MTJs using low damping Heusler alloys.

AB - A 4-fold-symmetry hexagonal Ru emerging in epitaxial MgO/Ru/Co2FeAl/MgO heterostructures is reported, in which an approximately Ru(022¯3) growth attributes to the lattice matching between MgO, Ru, and Co2FeAl. Perpendicular magnetic anisotropy of the Co2FeAl/MgO interface is substantially enhanced. The magnetic tunnel junctions (MTJs) incorporating this structure give rise to the largest tunnel magnetoresistance for perpendicular MTJs using low damping Heusler alloys.

KW - 4-fold-symmetry hexagonal ruthenium

KW - magnetic heterostructures

KW - perpendicular magnetic anisotropy

KW - tunnel magnetoresistance

UR - http://www.scopus.com/inward/record.url?scp=84941110348&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84941110348&partnerID=8YFLogxK

U2 - 10.1002/adma.201401959

DO - 10.1002/adma.201401959

M3 - Article

AN - SCOPUS:84941110348

SN - 0935-9648

VL - 26

SP - 6483

EP - 6490

JO - Advanced Materials

JF - Advanced Materials

IS - 37

ER -

A 4-Fold-Symmetry Hexagonal Ruthenium for Magnetic Heterostructures Exhibiting Enhanced Perpendicular Magnetic Anisotropy and Tunnel Magnetoresistance

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this