Theory of domain nucleation at inclusions in uniaxial materials
- 1 May 1964
- journal article
- Published by IOP Publishing in British Journal of Applied Physics
- Vol. 15 (5) , 551-554
- https://doi.org/10.1088/0508-3443/15/5/312
Abstract
Under certain conditions, domains of reverse magnetization may nucleate at non-magnetic inclusions in magnetic materials. On the assumption that reverse domain formation reduces the magnetostatic energy of an inclusion by one-half, calculations show that such nucleation is favourable only for inclusions above a certain critical radius, which is field dependent. Critical radii are determined for two uniaxial materials, cobalt and magnetoplumbite, giving, for H = 0, Rcrit = 7.5 μm and 58 μm respectively. These values decrease with increase of reverse field and the variation is plotted for a range of field values.Keywords
This publication has 3 references indexed in Scilit:
- Domain Structures on Thin Sheets of MagnetoplumbiteProceedings of the Physical Society, 1959
- Ferromagnetic Domain Nucleation in Silicon IronProceedings of the Physical Society. Section B, 1956
- A Theory of Domain Creation and Coercive Force in Polycrystalline FerromagneticsPhysical Review B, 1954