Abstract
Rietveld refinement and extended X-ray absorption fine structure (EXAFS) analysis on the synchrotron radiation X-ray data of BaTiO3-based shell phase powder specimens with Ho and Mg co-dopants were carried out to obtain the knowledge on the occupation site and its quantitative occupancy fraction in BaTiO3 perovskite structure. Ho ions occupied preferentially A-site in BaTiO3 and the occupation ratio was same in any doped compositions. Ho─O atomic distance in A-site is increased with increasing Ho doping in contract to that in B-site.
Acknowledgements
This work was supported in part by a grant from the NITECH 21st Century COE Program “World Ceramics Center for Environmental Harmony” by Japanese Ministry of Education, Science and Culture.