Stress release at Y{sub 2}BaCuO{sub 5} inclusions in fast melt processed YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} observed by micro-Raman spectroscopy
- Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven (Belgium)
- Departement Metaalkunde en Toegepaste Materiaalkunde, Katholieke Universiteit Leuven, de Croylaan 2, B-3001 Leuven (Belgium)
We have studied the interface region between the superconducting YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} (123) matrix and the embedded nonsuperconducting Y{sub 2}BaCuO{sub 5} (211) inclusions in fast melt processed samples, by recording micro-Raman spectra along lines crossing these inclusions. The observed relative shifts of the 123 Raman modes indicate the accumulation of compressive stress in the bulk of the 123 material and a release of this stress around the 211 inclusions. These results show that for practical applications of the fast melt processed materials, beside strong pinning, proper mechanical properties around the pinning centers are important. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 503575
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 21 Vol. 70; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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