Research Article

Aging Effect on Electrical Conductivity of Pure and Al-Doped YBa2Cu3O7−δ Single Crystals with a Given Topology of Planar Defects

Figure 1

(a) Photograph of the section with unidirectional twin boundaries in the Al-doped crystal K2. (b) Main panel: Material composition in the as-grown pure crystal K1 revealed by energy-dispersive X-ray spectroscopy (probed area of 2 × 2 μm2). Inset: Geometry of the experiment, see text for details.
931726.fig.001a
(a)
931726.fig.001b
(b)