layer growth
3.The BaTiO-3 thin film was grown epitaxially on SrTiO-3(001) substrate by laser molecular beam epitaxy (laser|MBE). The film growth process was monitored by \%in situ\% reflection high|energy electron diffraction (RHEED), the regular RHEED intensity oscillation from the 0th|Bragg reflection shows an unit cell layer|by|layer growth mode.

