Eur. Phys. J. AP
Volume 14, Number 3, June 2001
|Page(s)||159 - 163|
|Section||Surfaces, Interfaces and Films|
|Published online||15 June 2001|
Qualitative and quantitative analysis of twin structure in top seeding melt texture growth-processed YBa2Cu3O7−δ ceramics
Laboratoire CRISMAT (UMR CNRS-ISMRA 6508), 6 boulevard Maréchal Juin, 14050 Caen Cedex, France
2 Present address: Laboratoire LEMA (CNRS FRE-2077 - CEA-LRC M01), IUT de Blois, 3 place Jean Jaurès, CS2903, 41029 Blois, France
Corresponding author: email@example.com
Revised: 19 February 2001
Accepted: 4 April 2001
Published online: 15 June 2001
The present study reviews the techniques suitable for twin characterisation in TSMTG-processed ceramics: Conventional Transmission Electron Microscopy, Scanning Electron Microscopy (backscattered electrons images), and X-ray diffraction (pole figures). Optical microscopy can not be used because twin spacing in the studied ceramics are smaller than this technique resolution. A difference between SEM looking like twins average spacing and TEM twins average spacing is pointed out and some explanations are envisaged. Concerning X-ray diffraction, rocking curves can not be used to characterise twins in textured ceramics, but pole figures allow qualitative measurements.
PACS: 61.10.-i – X-ray diffraction and scattering / 68.37.Hk – Scanning electron microscopy (SEM) (including EBIC) / 68.37.Lp – Transmission electron microscopy (TEM) (including STEM, HRTEM, etc.) / 74.72.Bk – Y-based cuprates
© EDP Sciences, 2001
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