Kinetics of the lattice response to hydrogen absorption in Thin Pd and CoPd films

Sudhansu Sekhar Das, Gregory Kopnov, Alexander Gerber

Research output: Contribution to journalArticlepeer-review


Hydrogen can penetrate reversibly a number of metals, occupy the interstitial sites and cause large expansion of the crystal lattice. The question discussed here is whether the kinetics of the structural response matches hydrogen absorption. We show that thin Pd and CoPd films exposed to a relatively rich hydrogen atmosphere (4% H2) inflate irreversibly, demonstrate the controllable shape memory, and duration of the process can be of orders of magnitude longer than hydrogen absorption. The dynamics of the out-of-equilibrium plastic creep are well described by the Avrami-type model of the nucleation and lateral domain wall expansion of the swelled sites.

Original languageEnglish
Article number3597
Issue number16
StatePublished - Aug 2020


  • Hydrogen absorption
  • Lattice response
  • Metal hydrides
  • Palladium
  • Palladium alloys

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Chemistry (miscellaneous)
  • Molecular Medicine
  • Pharmaceutical Science
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry


Dive into the research topics of 'Kinetics of the lattice response to hydrogen absorption in Thin Pd and CoPd films'. Together they form a unique fingerprint.

Cite this