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On the Preparation of Thin Single‐Crystal Films of BaTiO 3

1962; Wiley; Volume: 45; Issue: 5 Linguagem: Inglês

10.1111/j.1151-2916.1962.tb11132.x

1551-2916

R. C. DeVries,

Surface Roughness and Optical Measurements

A study was made of the growth of very thin crystals of BaTiO 3 on platinum substrates by means of evaporation of KF from a KF‐BaTiO 3 solution. Crystals as thin as 300 A were obtained, but the areal extent was very small (0.2 mm 2 ) for a uniform thickness. The random nucleation on defects located on the substrate appears to be a serious limitation on producing large film area. Growth in a <110> direction resulted in more uniform thickness than growth in the <100> direction. The technique does provide a useful way of retrieving small single‐domain crystals with one electrode attached and may have useful application in microminiature devices.