Examples of Disorder Found in the Averaged Structures

Accession number;06A0198116
Title;Examples of Disorder Found in the Averaged Structures
Author; KUDO YASUHIRO (Tohoku Univ., Graduate School of Sci., JPN)
Journal Title;Journal of the Crystallographic Society of Japan
Journal Code:G0232A
ISSN:0369-4585
VOL.48;NO.1;PAGE.3-6(2006)
Figure&Table&Reference;FIG.8, REF.10
Pub. Country;Japan
Language;Japanese
Abstract;Three examples of disorder found in the averaged structures are presented. The crystal structure of high pressure form ZrO2 determined at 5.1GPa showed the disorder of oxygen positions separated by 1.22.ANGS.. The crystal structure of phase E synthesized at 15GPa and 1000.DEG.C. and quenched to the ambient condition showed that there exists short-range order between intralayer vacancies and interlayer cations but there does not exist a long-range order. The crystal structure of hydrous wadsleyite synthesized at 15.5GPa and 1300.DEG.C. and quenched to the ambient condition showed small but significant Fourier peaks at the site in a normally vacant tetrahedral void adjacent to Mg octahedral site. (author abst.)