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Title

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

Authors
Sadowski, Wojciech
François, Michel
Published in Physica C: Superconductivity and Its Applications. 1990, vol. 170, no. 1-2, p. 103-111
Abstract We report on the growth of Nd2-xCexCuO4-δ single crystals (0<x<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.
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Research group Groupe Bill
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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 and Its Applications, 1990, vol. 170, n° 1-2, p. 103-111. https://archive-ouverte.unige.ch/unige:3054

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Deposited on : 2009-09-21

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