TEM studies of the switching characteristics of small permalloy elements as a function of field orientation

Lim, C.K., Yi, G., Chapman, J.N., Nicholson, W.A.P., McVitie, S. and Wilkinson, C.D.W. (2003) TEM studies of the switching characteristics of small permalloy elements as a function of field orientation. Journal of Physics D: Applied Physics, 36(24), 3099 -3102. (doi:10.1088/0022-3727/36/24/001)

Lim, C.K., Yi, G., Chapman, J.N., Nicholson, W.A.P., McVitie, S. and Wilkinson, C.D.W. (2003) TEM studies of the switching characteristics of small permalloy elements as a function of field orientation. Journal of Physics D: Applied Physics, 36(24), 3099 -3102. (doi:10.1088/0022-3727/36/24/001)

Full text not currently available from Enlighten.

Abstract

We have studied how the switching field of permalloy elements with sub-micron widths varies as a function of the orientation of the applied field. Switching fields for individual elements were determined using Lorentz microscopy, the studies being facilitated greatly by the use of a newly designed magnetizing stage. Brief details of the stage are given. For elements with widths similar to400 nm, switching fields increased modestly as the angle the applied field made with the long axis of the element increased. In contrast, as the element width was reduced to 160 nm, little variation with field orientation was observed. The results suggest that the residual domain structures close to the ends of the elements played a major role in determining their switching characteristics, even for the smallest elements investigated here.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McVitie, Professor Stephen and Wilkinson, Professor Christopher and Chapman, Professor John
Authors: Lim, C.K., Yi, G., Chapman, J.N., Nicholson, W.A.P., McVitie, S., and Wilkinson, C.D.W.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Physics D: Applied Physics
ISSN:0022-3727

University Staff: Request a correction | Enlighten Editors: Update this record