Raman probing of thermally induced effects on La2-xSrxCuO4 single crystals

 
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1989 (EN)
Raman probing of thermally induced effects on La2-xSrxCuO4 single crystals (EN)

Haycock, PW (EN)
Raptis, C (EN)
Wanklyn, BM (EN)
Chen, C (EN)
McGreevy, RL (EN)

N/A (EN)

We have investigated the effects of long oxygen annealing of flux grown La2-xSrxCuO4 single crystals, using their Raman scatterin as a probe. The as-grown crystals display very weak Raman activity, whereas the annealed crystals show three well defined Raman peaks which disappear upon polishing a layer of ∼10 μm from the surface, indicating a low oxygen diffusion rate from surface to bulk. The Raman scattering exhibited by the annealed crystals is attributed to surface defects or/and new phases formed during the annealing. After annealing, the crystals were found to display superconductivity at 8 K. © 1989. (EN)

journalArticle

Ceramic Materials (EN)
Superconducting Materials (EN)
Lanthanum Compounds (EN)
Raman Scattering (EN)
High Temperature Superconductors (EN)
Single Crystals (EN)
Oxide Superconductors (EN)
Lanthanum Strontium Copper Oxides (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Physica C: Superconductivity and its applications (EN)

English

1989


ELSEVIER SCIENCE BV (EN)



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