Electrical properties of individual CoPt/Pt multilayer nanowires characterized byin situSEM nanomanipulators
- 4 May 2011
- journal article
- Published by IOP Publishing in Nanotechnology
- Vol. 22 (24), 245709
- https://doi.org/10.1088/0957-4484/22/24/245709
Abstract
Here we report for the first time accurate and comprehensive measurements of electrical properties of individual CoPt/Pt multilayer nanowires both with periodic and non-periodic layer structures. A remarkably high failure current density of 1.69 × 10(12) A m(-2) for the periodic MNW and a similar 1.76 × 10(12) A m(-2) for the non-homogeneous MNW has been measured. The resistance of both types of multilayer nanowire structures are well fitted by a series resistance model, determining the separate resistance contribution of the component layers and magnetic/nonmagnetic interfaces for a single multilayer nanowire. The field-dependent interface resistance of both samples is calculated, 13.2 Ω for periodic layer structures and 4.84 Ω for non-periodic layer structures. The clear physical picture of the resistance distribution within individual multilayer nanowires is then determined. The accurate electrical testing of magnetic multilayer nanowires provides basic and necessary electrical parameters for their usage as building blocks or interconnects in nanoelectronics and nanosensors.This publication has 38 references indexed in Scilit:
- Numerical simulation of giant magnetoresistance in magnetic multilayers and granular filmsPhysical Review B, 2010
- Massive Fabrication of Free-Standing One-Dimensional Co/Pt Nanostructures and Modulation of Ferromagnetism via a Programmable Barcode Layer EffectNano Letters, 2005
- Current-Induced Two-Level Fluctuations in Pseudo-Spin-Valve () NanostructuresPhysical Review Letters, 2003
- Measurement of resistance and spin-memory loss (spin relaxation) at interfaces using sputtered current perpendicular-to-plane exchange-biased spin valvesPhysical Review B, 2000
- Perpendicular magnetoresistance of magnetic multilayers: theory and experimentsJournal of Magnetism and Magnetic Materials, 1993
- Theory of the perpendicular magnetoresistance in magnetic multilayersPhysical Review B, 1993
- Perpendicular giant magnetoresistance of microstructured Fe/Cr magnetic multilayers from 4.2 to 300 KPhysical Review Letters, 1993
- Two-channel analysis of CPP-MR data for Ag/Co and AgSn/Co multilayersJournal of Magnetism and Magnetic Materials, 1993
- Enhanced magnetoresistance in layered magnetic structures with antiferromagnetic interlayer exchangePhysical Review B, 1989
- Giant Magnetoresistance of (001)Fe/(001)Cr Magnetic SuperlatticesPhysical Review Letters, 1988