Temperature dependence of magnetic exchange stiffness in iron and nickel
- 26 May 2020
- journal article
- research article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 53 (39), 39LT01
- https://doi.org/10.1088/1361-6463/ab9672
Abstract
This work demonstrates a new technique to derive the magnetic exchange stiffness, A, using a measurement of the Bloch-type 180° domain wall width. Because this method is static and free from external fields, it enables the derivation of A over almost the entire temperature range up to near the Curie temperature, T C, which is difficult for existing techniques. With this technique, the temperature dependence of A for iron and nickel was assessed. Furthermore, after a systematic comparison of existing scaling functions, a promising scaling of A was demonstrated.Keywords
Funding Information
- Japan Society for the Promotion of Science (16K21632, 19H02418, 19K22052)
- Murata Science Foundation
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