Adjustable device for magnetic material investigation by Kerr microscopy

Issue title: Proceedings of the twelfth International Symposium on Interdisciplinary Electromagnetic, Mechanic and Biomedical Problems, ISEM Bad Gastein

Article type: Research Article

Authors: Ionita, Valentin^{a; *} | Petrescu, Lucian^a | Razicheanu, Alexandru^a

Affiliations: [a] MAGNAT Research Center, Electrical Engineering Department, Politehnica University of Bucharest, Spl. Independentei 313, 060042 Bucharest, Romania

Correspondence: [*] Corresponding author. Tel.: +40 21 402 9614; Fax: +40 21 410 4355; E-mail: vali@mag.pub.ro

Abstract: The paper is focused on the design, simulation and testing of an original experimental device, that allows the investigation of the magnetization processes in magnetic materials by Kerr microscopy. The adjustable magnetic field source is composed by two "magic" cylinders made with NdFeB permanent magnets. This source is coupled with a polarized reflected light microscope. The magnetic field is computed both by analytical formula and by 2-D and 3-D numerical simulation based on Finite Element Method.

Keywords: Kerr microscopy, permanent magnet cylinder, numerical simulation, finite element method

DOI: 10.3233/JAE-2007-782

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 25, no. 1-4, pp. 199-203, 2007