Observation of the early stages of growth of superconducting thin films by transmission electron microscopy
作者： Scott R. Summerfelt , C. Barry Carter , M. Grant Norton , Lisa A. Tietz
DOI: 10.1063/1.102363
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摘要: A method for the direct observation of early stages growth superconducting films by transmission electron microscopy (TEM) is reported. The technique uses well‐characterized, single‐crystal TEM foils as substrates deposition process. Ultrathin YBa2Cu3O6+x (YBCO) were prepared pulsed laser from stoichiometric bulk samples directly onto (001) oriented MgO thin‐foil substrates. Observation film possible without any post‐deposition specimen preparation. epitactic nature shown analysis moire fringe pattern and selected area diffraction. In addition to an interconnected film, copper oxide particles ablated clusters observed.
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