Qualitative and quantitative analysis of twin structure in top seeding melt texture growth-processed YBa2Cu3O7−δ ceramics

F. Delorme; I. Monot-Laffez; C. Harnois; G. Desgardin

doi:10.1051/epjap:2001154

All issues

Volume 14 / No 3 (June 2001)

Eur. Phys. J. AP, 14 3 (2001) 159-163

Abstract

Issue		Eur. Phys. J. AP Volume 14, Number 3, June 2001


Page(s)		159 - 163
Section		Surfaces, Interfaces and Films
DOI		https://doi.org/10.1051/epjap:2001154
Published online		15 June 2001

Eur. Phys. J. AP 14, 159-163 (2001)
https://doi.org/10.1051/epjap:2001154

Qualitative and quantitative analysis of twin structure in top seeding melt texture growth-processed YBa₂Cu₃O_7−δ ceramics

F. Delorme¹, I. Monot-Laffez², C. Harnois¹ and G. Desgardin¹

¹ 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: fabian.delorme@ismra.fr

Received: 17 November 2000
Revised: 19 February 2001
Accepted: 4 April 2001
Published online: 15 June 2001

Abstract

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

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