Growth of single crystals, thermal dependency of lattice parameters and Raman scattering in the Nd2-xCexCuO4-δ system

Sadowski, Wojciech; Hagemann, Hans-Rudolf; François, Michel; Bill, Hans; Peter, Martin; Walker, Eric; Yvon, Klaus

doi:10.1016/0921-4534(90)90235-7

Scientific article

English

Growth of single crystals, thermal dependency of lattice parameters and Raman scattering in the Nd2-xCexCuO4-δ system

ContributorsSadowski, Wojciech; Hagemann, Hans-Rudolf; François, Michel; Bill, Hans; Peter, Martin; Walker, Eric; Yvon, Klaus

Published inPhysica. C, Superconductivity, vol. 170, no. 1-2, p. 103-111

Publication date1990

Abstract

We report on the growth of Nd2-xCexCuO4-δ single crystals (0<0.2) from Cu2O flux. Free separated crystals with maximum size of 5x8x0.15 nm3 have been obtained. Magnetic AC susceptibility measurements show a sharp superconducting transition at temperatures up to 23 K. The temperature dependence of the lattice parameters has been measured by means of X-ray powder diffraction between 10 K. Room temperature Raman spectra reveal a new band at 320 cm-1 which is not observed in Nd2CuO4. Raman spectra of crystals with Tc ranging from 7 to 22 K show a systematic intensity change of the broad band at 590 cm-1.

Affiliation

Faculté des sciences / Section de chimie et biochimie / Département de chimie physique

Research group

Groupe Bill

Citation (ISO format)

SADOWSKI, Wojciech et al. Growth of single crystals, thermal dependency of lattice parameters and Raman scattering in the Nd2-xCexCuO4-δ system. In: Physica. C, Superconductivity, 1990, vol. 170, n° 1-2, p. 103–111. doi: 10.1016/0921-4534(90)90235-7

Identifiers

PID : unige:3054
DOI : 10.1016/0921-4534(90)90235-7

ISSN of the journal0921-4534

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Growth of single crystals, thermal dependency of lattice parameters and Raman scattering in the Nd2-xCexCuO4-δ system

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