Control of stable magnetization states in permalloy nanorings using magnetic nanowires

Lal, Manohar and Sakshath, S and Venkateswarlu, D and Kumar, PS Anil (2018) Control of stable magnetization states in permalloy nanorings using magnetic nanowires. In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 448 (SI). pp. 153-158.

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Abstract

We study the evolution of the magnetic field-induced switching between the stable domain configurations of permalloy nanoring structures, when magnetic nano-wires are attached to them. Magnetoresistance measurements were performed on such devices for two configurations of the attached nano-wires: (i) when they are at diametrically opposite ends of the nanoring, and (ii) when the nanowires are at an obtuse angle with respect to each other. During the measurements, the direction of application of the in-plane magnetic field is varied to understand the switching properties of the devices. Micromagnetic simulations were carried out in order to understand the domain configuration and reversal mechanism. We show that due to the nature of domain walls created by the presence of the nanowires in the obtuse configuration, a vortex state can be stabilized in the nano-ring. We extended our studies to various nanoring devices with different widths while keeping a constant thickness. (C) 2017 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Publisher:	10.1016/j.jmmm.2017.06.097
Additional Information:	International Conference on Magnetic Materials and Applications (ICMAGMA), Hyderabad, INDIA, FEB 01-03, 2017 Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	20 Jan 2018 06:58
Last Modified:	20 Jan 2018 06:58
URI:	http://eprints.iisc.ac.in/id/eprint/58798

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