DyBa2Cu3O7-y superconducting materials synthesized in situ in a magnetic field. Relations between structure and properties

✍ Scribed by R. Cloots; P. Diko; P.A. Godelaine; N. Vandewalle; M. Ausloos

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 169 KB
• Volume: 235-240
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)91402-8

✦ Synopsis

We have synthesized c-axis oriented magnetically melt textured grown DyBa2Cu307.y samples at 1035°C under a 0.6T magnetic induction. We discuss the crystal growth mechanism of such 123 melt textured grown superconducting ceramics. A strictly tridimensional model is proposed based on Schmitz et al. model, taking into account the peculiar physical properties reported for such materials. In particular a filamentary one dimensional electron conduction path at the percolation threshold is emphasized. We have used optically l:X31arized light microscopy as well as electron microscopy ,analysis to deduce the growth steps.