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Micro-Raman Spectra of YBaCuO Superconductors

Pham V. Huong ; Laboratoire de Spectroscopie Moleculaire et Cristalline (U. A. 124) Universite de Bordeaux I, 351, cours de La Liberation 33405 TALENCE, France
J. C. Grenier ; Laboratoire de Chimie du Solide, Universite de Bordeaux I, (U. P. 8661) 351, cours de la Liberation, 33405 TALENCE, France
P. Bezdicka ; Laboratoire de Chimie du Solide, Universite de Bordeaux I, (U. P. 8661) 351, cours de la Liberation, 33405 TALENCE, France

Sažetak

A systematic study of the Raman spectra of Y-Ba-Cu-O superconducting
materials under different experimental conditions clarifies the controversial results given in the literature. Under the determined conditions and thanks to the micro-Raman technique, reproducible polarized Raman spectra can be obtained and a coherent assignment can be suggested for YBa2Cu307and EuBa2Cu307.For YBa2Cu3(OjF);, the introduction of fluorine atoms was found to be localized in pyramidal CuO units rather than in CuO chains.

Ključne riječi

Hrčak ID:

175894

URI

https://hrcak.srce.hr/175894

Datum izdavanja:

30.9.1988.

Posjeta: 830 *