Fabrication of giant magneto resistance sensing devices with vertically grown Co/Cu nanowires on a substrate

Thong C. Le; Hargsoon Yoon; Linfeng Chen; Roy McCann; Vijay K. Varadan

doi:10.1117/1.3273963

1 October 2009 Fabrication of giant magneto resistance sensing devices with vertically grown Co/Cu nanowires on a substrate

Thong C. Le, Hargsoon Yoon, Linfeng Chen, Roy McCann, Vijay K. Varadan

Author Affiliations +

Journal of Micro/Nanolithography, MEMS, and MOEMS, Vol. 8, Issue 4, 043055 (October 2009). https://doi.org/10.1117/1.3273963

Abstract

We describe the fabrication and analysis of a giant magneto resistance (GMR) sensing device with multilayered magnetic nanowires containing alternating ferromagnetic and nonmagnetic layers on a silicon substrate. Multilayered nanowires with Co and Cu layers were vertically grown using pulsed electrochemical deposition to control the periodic structure of nanolayers in a nanopore template. Lithography-assisted template bonding (LATB) was applied to attach a polymer nanopore membrane and grow nanowires on silicon and polyimide substrates. For magnetic field sensing, the multilayered nanowires were electrically connected to top and bottom electrodes by overgrowing nanowires, and low contact resistance values of GMR sensing devices were achieved. The GMR effect was measured with magnetic field changes perpendicular and parallel to the axis of the nanowires. This simple fabrication process is highly favorable for the development of nanoscale electronics with magnetic nanowires at low cost and would offer large design flexibility.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Thong C. Le, Hargsoon Yoon, Linfeng Chen, Roy McCann, and Vijay K. Varadan "Fabrication of giant magneto resistance sensing devices with vertically grown Co/Cu nanowires on a substrate," Journal of Micro/Nanolithography, MEMS, and MOEMS 8(4), 043055 (1 October 2009). https://doi.org/10.1117/1.3273963

Published: 1 October 2009

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