Incommensurate Modulated Structure Determination by Combining High Resolution Electron Microscopy and Electron Diffraction

1994 ◽  
Vol 150-151 ◽  
pp. 77-84 ◽  
Author(s):  
Zheng Qing Fu ◽  
D.X. Huang ◽  
F.H. Li ◽  
Jian Qiang Li ◽  
Zhong Xian Zhao ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Electron Diffraction ◽  
Structure Determination ◽  
High Resolution Electron Microscopy ◽  
Modulated Structure ◽  
Resolution Electron

Modulated Structure of the High-TcSuperconductor Bi-Pb-Ca-Sr-Cu-O Studied by High-Resolution Electron Microscopy and Electron Diffraction

1989 ◽  
Vol 28 (Part 2, No. 10) ◽  
pp. L1783-L1786 ◽  
Author(s):  
Yoshihiko Hirotsu ◽  
Osamu Tomioka ◽  
Naoki Yamamoto ◽  
Yoshio Nakamura ◽  
Sigemaro Nagakura ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Electron Diffraction ◽  
High Resolution Electron Microscopy ◽  
Modulated Structure ◽  
Resolution Electron

Modulated Structure of High-TcSuperconductor Bi-Ca-Sr-Cu-O Studied by High-Resolution Electron Microscopy and Electron Diffraction

1988 ◽  
Vol 27 (Part 2, No. 10) ◽  
pp. L1869-L1872 ◽  
Author(s):  
Yoshihiko Hirotsu ◽  
Osamu Tomioka ◽  
Tadakatsu Ohkubo ◽  
Naoki Yamamoto ◽  
Yoshio Nakamura ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Electron Diffraction ◽  
High Resolution Electron Microscopy ◽  
Modulated Structure ◽  
Resolution Electron

Modulated structure of Ag2SnO3 studied by high-resolution electron microscopy

2000 ◽  
Vol 56 (3) ◽  
pp. 363-368 ◽  
Author(s):  
Takeo Oku ◽  
Anna Carlsson ◽  
Jan-Olov Bovin ◽  
Christer Svensson ◽  
L. Reine Wallenberg ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Electron Diffraction ◽  
High Resolution Electron Microscopy ◽  
Modulated Structure ◽  
Resolution Electron ◽  
Orthorhombic Cell ◽  
High Resolution Images ◽  
Diffraction Patterns ◽  
Linear Coordination

The modulated structure of Ag2SnO3, disilver tin trioxide, was investigated by high-resolution electron microscopy and electron diffraction along four different directions. Electron diffraction showed an incommensurate one-dimensional modulated structure with a modulation wavevector of 1/6.4a*. High-resolution images showed a large number of superstructure domains with the size range 10–100 nm and orientations related by hexagonal rotation. The modulation was determined to be displacements along the c axis of the Ag atoms both in octahedral and linear coordination. An approximate structure model with a commensurate sixfold superstructure, with an orthorhombic cell (P212121, a = 2.922, b = 1.267, c = 0.562 nm), is proposed. Calculated images and electron diffraction patterns, based on this model, agree well with experimental observations.

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