Unusual hydrogen implanted gold with lattice contraction at increased hydrogen content

Khac Thuan Nguyen, Van Hiep Vuong, The Nghia Nguyen, Trong Tinh Nguyen, Tomoyuki Yamamoto, Nam Nhat Hoang

Research output: Contribution to journalArticlepeer-review

Abstract

The experimental evidence for the contraction of volume of gold implanted with hydrogen at low doses is presented. The contraction of lattice upon the addition of other elements is very rare and extraordinary in the solid-state, not only for gold but also for many other solids. To explain the underlying physics, the pure kinetic theory of absorption is not adequate and the detailed interaction of hydrogen in the lattice needs to be clarified. Our analysis points to the importance of the formation of hydride bonds in a dynamic manner and explains why these bonds become weak at higher doses, leading to the inverse process of volume expansion frequently seen in metallic hydrogen containers.

Original languageEnglish
Article number1560
JournalNature communications
Volume12
Issue number1
DOIs
Publication statusPublished - 2021 Dec

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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