| Autor: |
Maheswaran, B., Williams, Mary G., Zhang, J. Z., Wang, S. Q., Bonetto, C. A., Heyvaert, Ilse, Testelin, C., Markiewicz, R. S., Giessen, Bill C. |
| Zdroj: |
Journal of Superconductivity; February 1996, Vol. 9 Issue: 1 p135-141, 7p |
| Abstrakt: |
An SEM and STM study was made of terrace formation in partial melt-regrown EuBa2Cu3O7-d. Terraces form above 920°C, well below the bulk melting temperature (1075±10°C). The terrace formation is accompanied by significant grain growth, possibly triggered by a “surface-melting” transition. Melting occurs in a layer a few monolayers thick, and the highly mobile layers reconstruct into terraced form due to a faceting transition. The terrace growth can be reproduced by a theoretical faceting model. The STM also reveals a finer-scale sinusoidal modulation of the surface, of unknown origin. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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