Abstract
Hydrogen reduction treatments with variations in isothermal reduction temperature, duration, and partial pressure of hydrogen (PH2) are carried out on CeO2 nanoparticles (NPs) to investigate the relationship between the surface chemical states and magnetic properties of the samples. The phenomenon of surface reduction degree dependence of the ferromagnetism of CeO2 NPs is observed. Semiquantitative calculated concentrations of surface Ce3+ ions from x-ray photoelectron spectroscopy data demonstrate that ferromagnetism does not relate to the surface oxygen vacancies but to the surface Ce3+/Ce4+ pairs. The higher the number of surface Ce3+/Ce4+ pairs, the more robust the ferromagnetism appears.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
