ISSN:
1572-9605
Keywords:
Terrace growth
;
surface melting
;
Eu-123 superconductor
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract An SEM and STM study was made of terrace formation in partial melt-regrown EuBa2Cu3O7−δ. 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00728438
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