Chowdhury, P. ; Ghosh, S. K. ; Dogra, Anjana ; Dey, G. K. ; Gowda, Yashwant G. ; Gupta, S. K. ; Ravikumar, G. ; Grover, A. K. ; Suri, A. K. (2008) Structural evolution and giant magnetoresistance in electrodeposited Co-Cu/Cu multilayers Physical Review B, 77 (13). pp. 134441-134449. ISSN 0163-1829
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Official URL: http://prb.aps.org/abstract/PRB/v77/i13/e134441
Related URL: http://dx.doi.org/10.1103/PhysRevB.77.134441
Abstract
Structural transformations and their effect on giant magnetoresistance (GMR) were investigated in electrodeposited Co/Cu multilayers with varying Co-layer thicknesses (tCo) in the range of 0.2-10 nm while keeping the Cu layer thickness (tCu) fixed at 4 nm. X-ray diffraction, scanning electron microscopy, cross-sectional transmission electron microscopy, and magnetization measurements were carried out to probe the structural transition from granular to semicontinuous to continuous Co layers. An unexpected result of the study is the observation of variations in GMR characteristics with a sharp peak in GMR at tCo=0.5 nm followed by a broad peak at tCo=3 nm. The GMR results have been analyzed in terms of ferromagnetic and superparamagnetic components for samples with varying tCo to understand the structural evolution of the magnetoresistance behavior.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 14654 |
Deposited On: | 12 Nov 2010 13:53 |
Last Modified: | 04 Jul 2012 04:53 |
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