The conduction mechanism across 45° symmetric tilt boundary in highly donor-doped SrTiO3 bicrystals was studied. The current-voltage (I-V) characteristics across the boundary were observed to be deviated from linear to non-linear relationship over the investigated voltage. The I-V characteristic across the single boundary exhibited a square dependency in the voltage range below 0.5V. High-resolution transmission electron microscopy (HRTEM) on investigation showed that there were no films existed at the boundary at an atomic resolution level.
ASJC Scopus subject areas
- Materials Science(all)