Huang Wen, Pã Lsson Gunnar K, Brischetto Martin, Droulias Sotirios A, Hartmann Ola, Wolff Max, Hjà Rvarsson Bjà Rgvin
Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden.
J Phys Condens Matter. 2017 Dec 13;29(49):495701. doi: 10.1088/1361-648X/aa9696.
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.
