The influence of chemisorption of CO and H2 has been studied on small iron carbide particles by Mössbauer spectroscopy. The line with is increased by 2-3 times upon evacuation and also the values of isomer shift and magnetic hyperfine field were increased in vacuum. The effect is attributed to the chemisorption induced uniformization of the magnetic exchange interaction among the particles.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Condensed Matter Physics
- Physical and Theoretical Chemistry