Change in the crystalline structure during the phase transition of the palladium–hydrogen system

Autor:	Tetsuya Ishikawa, Toshimitsu Yamazaki, Satoshi Itoh, Haruhiko Ohashi, Kenichi Kato, Akio Kawasaki, Kunihiro Shima
Rok vydání:	2015
Předmět:	Diffraction Phase transition Materials science Hydrogen Analytical chemistry General Physics and Astronomy chemistry.chemical_element Crystal structure Lattice constant chemistry Lattice (order) Desorption sense organs Physical and Theoretical Chemistry Palladium
Zdroj:	Phys. Chem. Chem. Phys.. 17:24783-24790
ISSN:	1463-9084 1463-9076
DOI:	10.1039/c5cp02725j
Popis:	We performed an X-ray diffraction experiment while a palladium bulk absorbed and desorbed hydrogen to investigate the behavior of the crystalline lattice during the phase transition between the α phase and the β phase. Fast growth of the β phase was observed at around x = 0.1 and x = 0.45 of PdHx, and the phase transition rate has an exponential behavior in between. In addition, slight compression of the lattice at a high hydrogen concentration, an increase in the lattice constant, and broadening of the line width of the α phase after a cycle of absorption and desorption of hydrogen were observed. These behaviors correlated with the change in the sample length, which may infer that the change in shape was related to the phase transition.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2cd8104186fb2129a793fe88d790eba https://doi.org/10.1039/c5cp02725j Zobrazit plný text záznamu