@article{oai:nitech.repo.nii.ac.jp:00002273,
 author = {Ishizawa, Nobuo and Du, Boulay  Douglas and Suda, katsumi and Akazawa, Tsugumi and Katsumata, Tetsuhiro and Inaguma, Yoshiyuki},
 journal = {セラミックス基盤工学研究センター年報 = Annual report of the Ceramics Research Laboratory Nagoya Institute of Technology},
 month = {Mar},
 note = {Temperature dependence of the defect pyrochlore-type structure of Pb2Ru2O6.5 has been investigated at 123, 193 and 293 K by the single-crystal diffraction method. The oxide anion vacancies order preferentially on one of two inversion centre related sites, thereby breaking the symmetry of the pyrochlore archetype. The Pb atoms are displaced by about 0.042 A toward the oxide anion vacancy. The mean thermal expansion coefficient of the unit cell dimension was 11.8 x 10-6 in the investigated temperature region. The excess electrons of 6 eA-3 at the peak top are located about 0.8 A along the principal axes from each Pb atom in the difference Fourier map, suggesting a disordered distortion of the Pb electron cloud., application/pdf},
 pages = {19--22},
 title = {Structure of Defect Pyrochlore-Type Pb2Ru2O6.5},
 volume = {6},
 year = {2007}
}