Electropolishing of polycrystalline YBa2Cu3O7-δ to meet the need for sharp needle geometry

Hu, Q.H. & Alarco, J.A. (1992) Electropolishing of polycrystalline YBa2Cu3O7-δ to meet the need for sharp needle geometry. Surface Science, 266(1-3), pp. 538-544.

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Abstract

An electropolishing method has been developed for preparing sharp needles from polycrystalline YBa2Cu3O7-δ by modifying a recipe for TEM specimen preparation. The method is characterized by a polishing temperature of below 0°C, a non-acidic electrolyt and an even removal of the constituent phases. An approach was employed of combining I-V measurements for polishing process and microscopical observation of surface morphology in finding optimum polishing conditions. TEM evidenced that no preferential attack appeared to grain boundaries. X-ray diffractometry and electron diffraction implied that no change in oxygen content occurred during electropolishing. The sharpness of the tip was examined by field-ion microscopy.

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ID Code: 64038
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By (since 1996):2
Export Date: 5 November 2013
Source: Scopus
CODEN: SUSCA
Language of Original Document: English
Correspondence Address: Hu, Q.-H.; Department of Physics, Chalmers University of Technology, S-412 96 Göteborg, Sweden
Additional URLs:
Keywords: Copper Oxides--Microscopic Examination, Microscopes, Ion--Field Emission, Microscopic Examination--Specimen Preparation, Microscopic Examination--Transmission Electron Microscopy, Polishing--Electrolytic, Field Ion Microscopy, Needle Crystal Preparation, Oxide Crystal Electropolishing, Superconducting Copper Oxides, X-Ray Diffractometry, Yttrium Barium Cuprates, High Temperature Superconductors
DOI: 10.1016/0039-6028(92)91072-J
ISSN: 0039-6028
Divisions: Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 07 Nov 2013 01:18
Last Modified: 07 Nov 2013 01:18

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