Fabrication of magnetic nanodot arrays using ultrathin alumina membrane (UTAM)

Chowdhury, P and Boominatha Sellarajan, S and Krishnan, M and Barshilia, Harish C (2011) Fabrication of magnetic nanodot arrays using ultrathin alumina membrane (UTAM). In: AIP Conf. Proc. 1447, 19–23 December 2011, SRM University, Kattankulathur, Tamilnadu, India.

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Abstract

Fabrication of ultrathin alumina membranes were carried out using two step anodization from high purity aluminum foil. This membrane provides highly ordered nano pores with diameter of 80 nm and intra-pore distance of the order 110 nm. The membrane with thickness < 100 nm was used as a evaporation mask for the growth of magnetic nanodot arrays of Co, SmCo5 and CoPt on Si substrates. The structural investigations were carried out using Field Emission Scanning Electron Microscopy (FESEM). The elemental composition of nanodot arrays was confirmed using Energy Dispersive X-Ray (EDX) analysis. Magnetic characterizations were carried out to study the in-plane and out of-plane hysteresis behaviors and the coercive fields. The present novel two-step anodization approach is simple, efficient, and provides an inexpensive non-lithographic method to produce high density nano-structured materials for wide range of applications in nanotechnology and spintronics

Item Type: Conference or Workshop Item (Paper)
Subjects: PHYSICS
Division/Department: Surface Engineering Division, Surface Engineering Division, Surface Engineering Division, Surface Engineering Division
Depositing User: Dr. Harish C. Barshilia
Date Deposited: 16 Oct 2015 10:07
Last Modified: 16 Oct 2015 10:07
URI: http://nal-ir.nal.res.in/id/eprint/12371

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