Break-up of dipolar rings under an external magnetic field

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)287-293
Journal / PublicationPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume277
Issue number4-5
Publication statusPublished - 4 Dec 2000
Externally publishedYes

Abstract

An experimental and theoretical study of the deformation and break-up process of rings, formed by magnetic microspheres, under the application of an external magnetic field is reported in this Letter. When the external magnetic field is applied parallel to the plane of the rings, we found that the break-up process has three different outcomes depending on the way of application and time history of the external field: (a) deformation into a compact set of dipoles with a triangular lattice structure, (b) opening into a single chain, and (c) break-up into two chains with various relative sizes. A thorough theoretical investigation of the break-up process has been carried out based on computer simulations, taking into account solely the dipole-dipole and dipole-external field interactions, without thermal noise. The experimental results and the simulations are in good agreement. (C) 2000 Elsevier Science B.V.

Research Area(s)

  • Aggregation, Break-up, Magnetic microspheres, Rings

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Break-up of dipolar rings under an external magnetic field. / Kun, F.; Pál, K. F.; Wen, Weijia et al.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 277, No. 4-5, 04.12.2000, p. 287-293.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review