The ferroelectric and piezoelectric properties of (001) BiScO 3-PbTiO3 epitaxial films were investigated. Epitaxial films 1 μm thick were grown by pulsed laser deposition using ceramic targets of (1-x)BiScO3-xPbTiO3 (x=0.5) at substrate temperatures of 700°C on (100) SrRuO3/(100)LaAlO3 substrates. Well-saturated hysteresis loops with a remanent polarization of 36 μC/cm 2 were observed. The films had a room temperature dielectric constant of 800, tanδ=0.09 and a maximum permittivity of 3600 at 460°C. The room temperature e31f piezoelectric coefficient was -9 C/m 2. The piezoelectric properties obtained were comparable to those of Pb(Zr,Ti)O3 or relaxor ferroelectric-PbTiO3 films.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)