Volume 85, Number 5, March 2009
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||19 March 2009|
Continuous Néel-to-Bloch transition in strips whose thickness increases: Statics and dynamics
Seagate Technology - Bloomington, MN 55435, USA
2 Department of Physics, Texas AM University - College Station, TX, 77843, USA
Corresponding author: firstname.lastname@example.org
Accepted: 17 February 2009
For strips of width and height h, with both exchange and the dipole-dipole interaction, we find that Néel and Bloch domain walls are locally stable. As h is increased to hc, Néel walls evolve continuously to Bloch walls by a second-order transition. It is mediated by a critical mode with , corresponding to motion of the domain wall center. A uniform out-of-plane rf-field couples strongly to this critical mode only in the Néel phase. Local, but not global stability relative to a crosstie phase was established.
PACS: 75.60.Ch – Domain walls and domain structure / 75.70.Ak – Magnetic properties of monolayers and thin films
© EPLA, 2009
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