Experimental observation of hysteresis in a coherent metal-hydride phase transition
| Autor: | Ola Hartmann, Sotirios A. Droulias, Gunnar K. Pálsson, Björgvin Hjörvarsson, Max Wolff, Martin Brischetto, Wen Huang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Quantum phase transition
Phase transition Materials science Condensed matter physics Hydride Superlattice 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Metal Hysteresis visual_art Desorption 0103 physical sciences visual_art.visual_art_medium General Materials Science 010306 general physics 0210 nano-technology Single crystal |
| Zdroj: | Journal of Physics: Condensed Matter. 29:495701 |
| ISSN: | 1361-648X 0953-8984 |
| DOI: | 10.1088/1361-648x/aa9696 |
| Popis: | We investigate the hysteresis obtained in the hydrogen absorption and desorption cycle for a single crystal [Formula: see text] superlattice. Below the critical temperature, a small but clear hysteresis is observed in the pressure-composition isotherms, while it is absent above. The experimental results thereby prove the relevance of macroscopic energy barriers for obtaining hysteresis in coherent structural transformations. The textured Pd layer exhibits substantially larger hysteresis effects, which can be related to an irreversible energy loss caused by defect generation in Pd. |
| Databáze: | OpenAIRE |
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