Phase transitions in a domain wall
- 10 August 1987
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 20 (22) , 3401-3409
- https://doi.org/10.1088/0022-3719/20/22/012
Abstract
The energy of a one-dimensional domain wall (Bloch or Neel) at low and high temperatures is calculated approximately for the application of an external magnetic field along the hard direction. Following Aharoni (1966), Bulaevskii and Ginzburg (1964), the wall is found to vanish at a critical field value h=hc, the wall energy varying as (hc-h)32/. At high temperatures, in an applied magnetic field h which tends to zero, the magnetisation profile of the wall is calculated as a function of T-T* (where T*c is the temperature for the transition to a linear wall). The susceptibility is shown numerically to diverge as (T-T*)-1. This agrees with Lajzerowicz and Niez (1976) who argue that the linear transition should be of a second order.Keywords
This publication has 3 references indexed in Scilit:
- Stripe domain structure with Bloch-Neel interdomain walls in thin ferromagnetic filmsJournal of Physics C: Solid State Physics, 1985
- Phase transition in a domain wallJournal de Physique Lettres, 1979
- Energy of One-Dimensional Domain Walls in Ferromagnetic FilmsJournal of Applied Physics, 1966