Please use this identifier to cite or link to this item: http://idr.nitk.ac.in/jspui/handle/123456789/10848
Title: Effect of shape and magnetocrystalline anisotropies in ordered Co nanorod arrays with smaller diameter
Authors: Sellarajan, B.
Nagaraja, H.S.
Barshilia, H.C.
Chowdhury, P.
Issue Date: 2016
Citation: Journal of Magnetism and Magnetic Materials, 2016, Vol.404, , pp.197-204
Abstract: Template assisted growth of Co nanorod arrays through electrochemical route was investigated. During this investigation, the template with nano-pore diameter was kept at a fixed value of 45 nm, whereas the length of the as grown nanorod array was varied from 25 to 400 nm keeping in mind that the aspect ratio (L/D) covers both below and above the unity. X-ray diffraction patterns indicate that the nanorod arrays initiate its textured growth with fcc (111) phase, however, the change in growth texture to hcp (100) was observed as it grows above 200 nm in length. The anisotropy fields extracted from the measured magnetization data reveal that a cross-over from in-plane to out-of-plane anisotropy takes place for L/D ?2.0. Based on the analytical approach, it seems that the shape anisotropy originated from the demagnetization factor with the change in geometry and magnetostatic interaction among the nanorods cause this crossover. However the micromagnetic simulation yields that both magnetocrystalline anisotropy and the magnetostatic interaction along with shape anisotropy are very much important to explain the experimental observations. 2015 Elsevier B.V. All rights reserved.
URI: http://idr.nitk.ac.in/jspui/handle/123456789/10848
Appears in Collections:1. Journal Articles

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