Topography dependence of the metamagnetic phase transition in FeRh thin films
| Autor: | Thomas Thomson, Charlotte Bull, Craig Barton, J L Warren |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
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Phase transition Materials science Future studies Alloy Nucleation lcsh:Medicine 02 engineering and technology engineering.material 01 natural sciences Article Magnetic properties and materials 0103 physical sciences Antiferromagnetism Thin film lcsh:Science 010302 applied physics Multidisciplinary Condensed matter physics Nanowires lcsh:R 021001 nanoscience & nanotechnology Ferromagnetism engineering lcsh:Q Magnetic force microscope 0210 nano-technology |
| Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-12 (2020) Warren, J L, Barton, C W, Bull, C & Thomson, T 2020, ' Topography dependence of the metamagnetic phase transition in FeRh thin films ', Scientific Reports . https://doi.org/10.1038/s41598-020-60767-z |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-020-60767-z |
| Popis: | The equiatomic alloy FeRh is of great scientific and technological interest due its highly unusual first-order antiferromagnetic (AF) to ferromagnetic (FM) phase transition. Here we report an exploration of the interplay between topography and phase evolution with a comprehensive magnetic force microscopy study of nominal 50 nm thick FeRh thin films and subtractively patterned wires of width 0.2 µm–2 µm. In continuous films where the surface morphology had not been optimised for smoothness, the topographical variation was observed to dominate the distribution of the magnetic transition temperatures and dictates the nucleation and growth of the magnetic phases. This observation was repeated for patterned elements, where the effects of surface morphology were more significant than those of spatial confinement. These results have clear implications for future studies of low-dimensional FeRh films, as surface topography must be considered when analysing and comparing the transition behaviour of FeRh thin films. |
| Databáze: | OpenAIRE |
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