Films of DyBa2Cu3O7-x with transition temperatures as high as 89 K and with nominal thicknesses down to 35 Å have been grown in situ using molecular beam epitaxy employing ozone as a source of reactive oxygen. The process has been successful with a variety of substrates including SrTiO3(100), SrTiO3(110), LaAlO 3(100), MgO(100), and yttria-stabilized zirconia. The films could be imaged with a scanning tunneling microscope at 4.2 K, indicating a conducting surface even at low temperatures.
|Original language||English (US)|
|Number of pages||3|
|Journal||Applied Physics Letters|
|State||Published - 1990|