Abstract
This article presents an application of a miniature orthogonal fluxgate magnetometer to magnetic domain imaging of coated grain-oriented silicon steels. The method is based on a common technique which maps stray magnetic fields emerging from the surface of the silicon steel. An orthogonal fluxgate made of a thin amorphous wire core is bent in a J-shape so that it may work as a gradiometer, in which the longer leg of the J-shaped wire core is made sensitive to stray magnetic fields whereas the shorter one is effectively located at a distance from them. Experiments were carried out with a thin Co-based amorphous wire used as a wire core and a highly grain oriented silicon steel as a sample on which the domain refinement by laser irradiation is made. Well-defined stripe domains with some spike domains, and grain boundaries were clearly imaged with this method without any assisting magnetic field to enhance stray magnetic fields.
Original language | English |
---|---|
Pages (from-to) | 8888-8890 |
Number of pages | 3 |
Journal | Journal of Applied Physics |
Volume | 91 |
Issue number | 10 I |
DOIs | |
Publication status | Published - May 15 2002 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)