A 4‐Fold‐Symmetry Hexagonal Ruthenium for Magnetic Heterostructures Exhibiting Enhanced Perpendicular Magnetic Anisotropy and Tunnel Magnetoresistance. (13th August 2014)

• Record Type: Journal Article
• Authors: Wen, Zhenchao; Sukegawa, Hiroaki; Furubayashi, Takao; Koo, Jungwoo; Inomata, Koichiro; Mitani, Seiji; Hadorn, Jason Paul; Ohkubo, Tadakatsu; Hono, Kazuhiro
• Is Part Of: Advanced materials. Volume 26:Number 37(2014)
• Page Start: 6483
• Page End: 6490
• Publication Date: 2014-08-13
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201401959
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="adma201401959-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>A 4‐fold‐symmetry hexagonal Ru</bold> emerging in epitaxial MgO/Ru/Co₂FeAl/MgO heterostructures is reported, in which an approximately Ru(02<inline-formula><alternatives><inline-graphic mimetype="image" xlink:href="ark:/27927/pgh1fbrb7r5" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /><mml:math display="inline" altimg="urn:x-wiley:dummy:adma201401959:equation:adma201401959-math-0001" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mover accent="true"><mml:mn>2</mml:mn><mml:mo>¯</mml:mo></mml:mover></mml:math></alternatives></inline-formula>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. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgh1fbrbcm1" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>