Measurements of domain-wall energy density for amorphous rare earth–transition metal thin films
- 15 October 1990
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 68 (8) , 4199-4202
- https://doi.org/10.1063/1.346208
Abstract
The value of domain-wall energy density (σw) has been most often assumed to be proportional to (AxKu)1/2, where exchange stiffness (Ax) is usually calculated from the mean-field theory. We report a simple method to derive σw from the difference between the onset of expanding and collapsing fields (ΔH) for circular domains. A micro-Kerr hysteresis-loop tracer with submicrometer resolution is used to measure the destabilizing field of domains written thermomagnetically in TbFeCo and GdTbFeCo films.This publication has 7 references indexed in Scilit:
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