1 cm diameter single domain NdBaCuO pellets, obtained from powders of Nd1 Ba2Cu3O7-δ (Nd123) with Nd2BaO4 (Nd210) addition, have been successfully prepared by Top Seeding Melt Textured Growth technique. Distribution of Nd4Ba2Cu2O10 (Nd422) precipitates in the Nd123 matrix has been analyzed by means of Polarized Light Optical Microscopy and Scanning Electron Microscopy. Relevant distribution inhomogeneity in the peripheral region of pellets with a high Nd210 addition have been revealed, as well as in regions of dendritic growth and around pores. Increasing difficulties in obtaining a complete growth of the single domain samples, in dependence of increasing Nd210 addition has been observed too. A qualitative growth model for high Nd concentration samples has been proposed to explain both these behaviors.

Correlation between the formation of growth bands and Nd210 addition in Nd1Ba2Cu3O7-delta bulk samples

PACE, Sandro;
2003

Abstract

1 cm diameter single domain NdBaCuO pellets, obtained from powders of Nd1 Ba2Cu3O7-δ (Nd123) with Nd2BaO4 (Nd210) addition, have been successfully prepared by Top Seeding Melt Textured Growth technique. Distribution of Nd4Ba2Cu2O10 (Nd422) precipitates in the Nd123 matrix has been analyzed by means of Polarized Light Optical Microscopy and Scanning Electron Microscopy. Relevant distribution inhomogeneity in the peripheral region of pellets with a high Nd210 addition have been revealed, as well as in regions of dendritic growth and around pores. Increasing difficulties in obtaining a complete growth of the single domain samples, in dependence of increasing Nd210 addition has been observed too. A qualitative growth model for high Nd concentration samples has been proposed to explain both these behaviors.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/1065739
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 8
  • ???jsp.display-item.citation.isi??? 7
social impact