Crystallization features of YBa2Cu3O7-d in the Y2BaCuO5-BaCuO2-CuO and Y2Cu2O5-BaCuO2 systems by N. A. Kalanda, L. I. Gurskii, A. M. Saad, V. M. Truhan, and T. V. Haliakevich

Crystal Research and Technology

Cryst. Res. Technol. 43, 599 (2008) - Abstract -

Crystallization features of YBa₂Cu₃O_7-d in the Y₂BaCuO₅-BaCuO₂-CuO and Y₂Cu₂O₅-BaCuO₂ systems

N. A. Kalanda, L. I. Gurskii*, A. M. Saad**, V. M. Truhan, and T. V. Haliakevich

Joint Institute of Solid State and Semiconductor Physics, NAS Belarus, Minsk, Belarus
*Belarusian State University of Informatics Science and Radioelectronics, Minsk, Belarus
**Al-Balqua Applied University, Salt, Jordan

Keywords	activation energy, precursors, macrograins textured, growth rate, mutual diffusion, crystallization mechanism
PACS	74.72.Bk
DOI	10.1002/crat.200711127

Based on the data of X-ray phase and microstructure analysis, the sample composition was optimized in order to provide maximum size of the textured macrograins of YBa₂Cu₃O_7-d and of the crystallites in the Y₂BaCuO₅-BaCuO₂-CuO, Y₂Cu₂O₅-BaCuO₂ systems. The growth rate has been studied and the YBa₂Cu₃O_7-d growth activation energy has been calculated for samples in the temperature range of 1240-1270 K. A crystallization mechanism of YBa₂Cu₃O_7-d was proposed and validated.

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