Abstract
We used high resolution ( δE < 150 meV) photoemission with synchrotron radiation in the range 10 eV < hv < 130 eV to study archetypal mixed valent and related cerium-, samarium-, europium-, thulium- and ytterbium-based systems. Generally all mixed valent systems (except the cerium-based system which is not yet fully characterized) exhibit an integer valent surface layer which has the lower value of the two bulk valence configurations. Temperature-dependent changes in bulk valence were observed in the europium and samarium compounds. Mixed valence was observed to persist down to at least 5 at.% dilution of thulium in Tm x Y 1− x Se while thulium appears to remain trivalent in all Tm x Y 1− x S compounds studied.
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.
