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UHLÍŘ, V. ARREGI URIBEETXEBARRIA, J. FULLERTON, E.
Original Title
Colossal magnetic phase transition asymmetry in mesoscale FeRh stripes
Type
journal article in Web of Science
Language
English
Original Abstract
Coupled order parameters in phase-transition materials can be controlled using various driving forces such as temperature, magnetic and electric field, strain, spin-polarized currents and optical pulses. Tuning the material properties to achieve efficient transitions would enable fast and low-power electronic devices. Here we show that the first-order metamagnetic phase transition in FeRh films becomes strongly asymmetric in mesoscale structures. In patterned FeRh stripes we observed pronounced supercooling and an avalanche-like abrupt transition from the ferromagnetic to the antiferromagnetic phase, while the reverse transition remains nearly continuous over a broad temperature range. Although modest asymmetry signatures have been found in FeRh films, the effect is dramatically enhanced at the mesoscale. The activation volume of the antiferromagnetic phase is more than two orders of magnitude larger than typical magnetic heterogeneities observed in films. The collective behaviour upon cooling results from the role of long-range ferromagnetic exchange correlations that become important at the mesoscale and should be a general property of first-order metamagnetic phase transitions.
Keywords
room-temperature; alloy; transformations; multiferroics; manganites; systems; order; films
Authors
UHLÍŘ, V.; ARREGI URIBEETXEBARRIA, J.; FULLERTON, E.
Released
11. 10. 2016
Publisher
Springer Nature
ISBN
2041-1723
Periodical
NATURE COMMUNICATIONS
Year of study
7
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
Pages to
Pages count
URL
https://www.nature.com/articles/ncomms13113#Abs1
Full text in the Digital Library
http://hdl.handle.net/11012/203159
BibTex
@article{BUT132563, author="Vojtěch {Uhlíř} and Jon Ander {Arregi Uribeetxebarria} and E.E. {Fullerton}", title="Colossal magnetic phase transition asymmetry in mesoscale FeRh stripes", journal="NATURE COMMUNICATIONS", year="2016", volume="7", number="1", pages="1--7", doi="10.1038/ncomms13113", issn="2041-1723", url="https://www.nature.com/articles/ncomms13113#Abs1" }