Field ion microscopy of the polyphase structure of YBa2Cu3O7-δ
Mikhailovskii I. M. , Ksenofontov V. A. , Sadanov E. V., Velikodnaya O. A.
The polyphase structure of this yttrium-based ceramic has been studied by field ion microscopy and mass spectrometry. Nanocrystalline structural features of two types have been observed. The dimensions of these structural features are much smaller than the thicknesses of the twin interlayers. It is suggested that these features are effective intragrain-pinning centers.