| | |
| | |
Stat |
Members: 3643 Articles: 2'487'895 Articles rated: 2609
28 March 2024 |
|
| | | |
|
Article overview
| |
|
Magnetization reversal processes in ErFe2/YFe2 exchange spring multilayer studied by xray magnetic circular dichroism | G. B. G. Stenning
; A. R. Buckingham
; G. J. Bowden
; R.C.C. Ward
; G. van der Laan
; L. R. Shelford
; F. Maccherozzi
; S. S. Dhesi
; P. A. J. de Groot
; | Date: |
28 Feb 2011 | Abstract: | X-ray magnetic circular dichroism at the Er M4,5 edge is used to study the
switching behavior of the hard ErFe2 layers in an epitaxial
[ErFe2(70{AA})/YFe2 (150{AA})]{ imes}25 exchange-spring superlattice.
Magnetic hysteresis loops for the Er magnetization, at temperatures T < 200 K,
reveal a switching behavior with a single type of irreversible switch
corresponding to vertical exchange spring states. Experiments at T > 200 K
reveal a crossover to a regime with two types of switching processes.
Computational modelling for this system gives a semi-quantitative agreement
with the experiment and reveals that the observed high temperature switching
behavior is due to a spin-flop like reorientation transition. In contrast to
conventional spin-flop transitions in antiferromagnets, in this exchange spring
system the increase in anisotropy energy of the hard magnetic layers is
overcome by the decrease in Zeeman energy of the soft layers. Computational
studies also reveal the presence of transitions between vertical exchange
spring and spin-flop states with a first-order character as well as continuous
transitions between these states. | Source: | arXiv, 1102.5656 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |