Fig. 1: Fabrication process of freestanding films, and structural and electrical properties of clamped and freestanding films.
From: Subsecond optically controlled domain switching in freestanding ferroelectric BaTiO3 membrane
a Schematic of the film transfer process from as-grown BTO/SAO/STO film onto the ITO substrate. Note that the schematic image illustrates a film with one unit cell, where films of 46-unit cells are used in this experimental study. The optical image shows the released 46-unit cell BTO membrane on the ITO substrate. b Topography image of freestanding films. The inset displays the line profile of the topography image. c XRD scan of BTO/Nb:STO, BTO/SAO/STO, freestanding BTO/ITO and ITO substrates. d Phase and e amplitude loops of freestanding films, displaying positive (VC+) and negative (VC−) switching voltage.
