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Thermal transitions in nano-patterned XY-magnets
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Arnalds, Unnar B., Ahlberg, Martina, Brewer, Matthew S., Kapaklis, Vassilios, Papaioannou, Evangelos Th., Karimipour, Masoud, Korelis, Panagiotis, Stein, Aaron, Ólafsson, Sveinn, Hase, Thomas P. A. and Hjörvarsson, Björgvin (2014) Thermal transitions in nano-patterned XY-magnets. Applied Physics Letters, Volume 105 (Number 4). Article number 042409. doi:10.1063/1.4891479 ISSN 0003-6951.
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Official URL: http://dx.doi.org/10.1063/1.4891479
Abstract
We have fabricated ultra-thin disc shaped islands wherein shape anisotropy confines the moment to the island plane, creating XY-like superspins. At low temperatures, the superspins are blocked, and, as the temperature is increased, they undergo a transition into a superparamagnetic state. The onset of this dynamic superspin state scales with the diameter of the islands, and it persists up to a temperature governed by the intrinsic ordering temperature of the island material defining a range in temperature in which dynamic behavior of the magnetic islands can be obtained.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
| Journal or Publication Title: | Applied Physics Letters | ||||||||
| Publisher: | American Institute of Physics | ||||||||
| ISSN: | 0003-6951 | ||||||||
| Official Date: | 30 July 2014 | ||||||||
| Dates: |
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| Volume: | Volume 105 | ||||||||
| Number: | Number 4 | ||||||||
| Article Number: | Article number 042409 | ||||||||
| DOI: | 10.1063/1.4891479 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access |
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