Tailoring the orientations of complex niobate films on perovskite substrates

Transmission-electron-microscopy study of quasi-epitaxial tungsten-bronze (Sr2.5Ba2.5Nb10O30) thin film on perovskite (SrTiO3) single crystal

“…However, these 16 The same growth patterns were found in the CBN/STO system, though the lattice mismatches in CBN/STO are 0.83% along a axes and 1.58% along c axes. Normally, the strain in thin film formed by PLD is strongly affected by various factors such as oxygen pressure, substrate temperature, pulse energy, quality of target, and film thickness.…”

“…17 Other than the latticemismatch strain, the properties of the interface also play an important role in the epitaxial growth. This can be understood within the frame of the coincident site lattice approaches 16,18 ; the surface treating can definitely influence the distribution of the atoms on the surface and lead to a change in the surface energy. In this case, an energyfavorable model will dominate the growth.…”

High-resolution electron microscopy of microstructure of SrTiO3/BaZrO3 bilayer thin films on MgO substrates

“…In particular, for transmission electron microscopes equipped with a spherical aberration (Cs) corrector [16], a novel imaging technique, negative Cs imaging (NCSI), was developed for the investigation of oxide materials [17,18]. With the NCSI technique it is possible to image chemical elements with low nuclear charge such as oxygen together with the surrounding cations [17][18][19]. In the present work, we investigate the microstructure of SrTiO 3 /BaZrO 3 (STO/BZO) bilayer films on MgO substrates using the NCSI technique.…”

Dielectric, ferroelectric properties, and grain growth of CaxBa1−xNb2O6 ceramics with tungsten-bronzes structure

“…Thin films of CBN28 on SrTiO 3 and MgO substrates were recently grown by pulsed laser deposition. 10,11 The detailed microstructure of CBN28 films and their interface structures have been investigated. To our knowledge, experimental data on CBN ceramics, single crystals, and films in the whole solid solution range are very scarce.…”