Abstract
The local coordination of technetium, a multivalent transition metal, in borosilicate glasses was investigated using EXAFS spectroscopy. Different types of samples were prepared to study the effects of formation modes. All glasses prepared from heptavalent compounds of Tc did not contain Tc 7+. The spectra of glasses obtained by melting under reducing conditions are explained by a mixture of metallic Tc clusters and of Tc 4+ coordination. The sixfold octahedral environment of Tc in TcO 2 dominates the EXAFS spectra of samples melted in air and Pt crucibles. These results are shown and discussed in the framework of the structural behavior of transition metals in glasses.
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.
