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Magnetization Reversal in NiFe Nano-triangles

Published online by Cambridge University Press:  01 February 2011

Xinghua Wang ,
Sarjoosing Goolaup ,
Chunxiao Cong  and
wensiang Lew
Xinghua Wang
Affiliation:
WANG0422@ntu.edu.sg, Nanyang Technological University, Singapore, Singapore
Sarjoosing Goolaup
Affiliation:
SGOOLAUP@ntu.edu.sg, Nanyang Technological University, Singapore, Singapore
Chunxiao Cong
Affiliation:
CONG@ntu.edu.sg, Nanyang Technological University, Singapore, Singapore
wensiang Lew
Affiliation:
wensiang@ntu.edu.sg, Nanyang Technological University, Singapore, Singapore
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Abstract

We have fabricated sub-100 nm triangles NiFe triangle arrays using NSL and the MOKE measurement and micromagnetic simulations were carried out to investigate the reversal mechanism of the arrays. Enhancement of coercivity compared to the thin film was observed in all the three arrays but in different degree from the MOKE measurement. With the increase of the lateral size of the triangle, the effect of the coercivity enhancing decreases. Micromagnetic simulation shows that instead of domain wall nucleation and annihilation in the thin film, the reversal mechanism of the 45 and 80 nm triangles is dominated by the coherent rotation. While in the 100 nm triangle, the magnetic reversal takes place via forming and reversing a V like sate.

Keywords

nanostructureself-assemblymagnetic properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1258: Symposia P/Q/R – Low-Dimensional Functional Nanostructures-Fabrication, Characterization and Applications , 2010 , 1258-Q11-18
Copyright
Copyright © Materials Research Society 2010

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