Jonathan Kin Ha
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Jonathan Kin Ha has a total of 2 co-authors. Here are the top co-authors by number of shared publications:
J. Kirschner
Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany
1 shared publication- Riccardo Hertel
CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg Université de Strasbourg Strasbourg France
1 shared publication
Latest Publications
- 27 June 2003
- Published by American Physical Society (APS) in Physical Review B
- Vol. 67 (22) , 224432
Micromagnetic study of magnetic configurations in submicron permalloy disks
We report a finite-element study of magnetic configurations in submicron permalloy disks using micromagnetics principles. Depending on the disk size, many (meta)stable magnetic states such as normal and twisted onion, in-plane vortex, and various buckle states are observed. A diagram is constructed to bring out the dependence of the different remanent states on the disk diameter and thickness. It shows that the disk thickness is the decisive factor in determining whether a vortex state is energetically more favorable than an onion state, and that the disk diameter determines whether some in-plane buckling can be sustainable.
- 27 June 2003
- Published by American Physical Society (APS) in Physical Review B
- Vol. 67 (22) , 224432
Micromagnetic study of magnetic configurations in submicron permalloy disks
We report a finite-element study of magnetic configurations in submicron permalloy disks using micromagnetics principles. Depending on the disk size, many (meta)stable magnetic states such as normal and twisted onion, in-plane vortex, and various buckle states are observed. A diagram is constructed to bring out the dependence of the different remanent states on the disk diameter and thickness. It shows that the disk thickness is the decisive factor in determining whether a vortex state is energetically more favorable than an onion state, and that the disk diameter determines whether some in-plane buckling can be sustainable.