INCOMMENSURATE MODULATED STRUCTURE OF PB-1223 DETERMINED BY COMBININGHIGH-RESOLUTION ELECTRON-MICROSCOPY AND ELECTRON-DIFFRACTION

Authors
LIU J LI FH WAN ZH FAN HF WU XJ TAMURA T TANABE K
Citation
J. Liu et al., INCOMMENSURATE MODULATED STRUCTURE OF PB-1223 DETERMINED BY COMBININGHIGH-RESOLUTION ELECTRON-MICROSCOPY AND ELECTRON-DIFFRACTION, Materials transactions, JIM, 39(9), 1998, pp. 920-926
Citations number
28
Categorie Soggetti
Metallurgy & Metallurigical Engineering","Material Science
Journal title
Materials transactions, JIM → ACNP
ISSN journal
09161821
Volume
39
Issue
9
Year of publication
1998
Pages
920 - 926
Database
ISI
SICI code
0916-1821(1998)39:9<920:IMSOPD>2.0.ZU;2-K
Abstract
The one-dimensional incommensurate modulated structure of (Pb0.5Sr0.3C u0.2)Sr-2(Ca0.6Sr0.4)(2)Cu3Oy has been determined. The low-resolution average structure was derived by image deconvolution. The image resolu tion was enhanced by phase extension based on a set of corrected elect ron diffraction intensities. Multi-dimensional direct methods were the n used to solve the four-dimensional (4D) structure. The incommensurat e modulated structure was finally obtained by cutting the 4D structure with the three-dimensional physical space. Occupation and/or displace ment modulation has been observed for all atoms.