New phenomena in nonequilibrium open Pd-Sm-H systems have been observed: as a result of saturation with hydrogen followed by degassing, a one-phase system transforms into a two-phase one, and the two-phase system, into the one-phase one. This indicates the occurrence of nonequilibrium oscillating phase transitions. According to the hypothesis suggested by the authors, the observed phenomena are explained by competition between ascending and gradient diffusion under substantially nonequilibrium conditions of the open solid-state system.
Department of Solid-State Physics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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