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Transport properties and micromagnetic modeling of magnetic nanowires with multiple constrictions
 

Summary: Transport properties and micromagnetic modeling of magnetic
nanowires with multiple constrictions
T. Liu a,b
, Y.H. Wu b,*, H.H. Long a,b
, Z.J. Liu a
, Y.K. Zheng a
, A.O. Adeyeye b
a
Data Storage Institute, 5 Engineering Drive 1, Singapore 117608, Singapore
b
Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576, Singapore
Available online 6 December 2005
Abstract
Ni nanowires were fabricated by electrochemical deposition in the pores of alumina and polycarbonate membranes, with the diameter around
200 nm and 30 nm, respectively. To study the magnetic and electrical properties of Ni nanowires, individual nanowires were selected and
connected with metal electrodes. Single and multiple constrictions were formed on the nanowires by FIB. The wires were further thinned using
oxygen plasma oxidation and chemical etching. Magnetoresistance curves were studied and compared before and after FIB trimming, oxidization
and chemical etching. 3-D micromagnetic modeling was used to simulate the magnetoresistance of the nanowires with and without constrictions.
D 2005 Elsevier B.V. All rights reserved.
Keywords: Magnetic nanowire; AMR; Nickel; FIB

  

Source: Adeyeye, Adekunle - Department of Electrical and Computer Engineering, National University of Singapore

 

Collections: Physics; Materials Science