Ferroelectric and antiferroelectric properties of AgNbO3 films fabricated on (001), (110), and (111)SrTiO3 substrates by pulsed laser deposition
2010
We fabricated 001, 110, and 111 oriented AgNbO3 (AN) films on (001)SrTiO3 (STO), (110)STO, and (111)STO substrates by pulsed laser deposition, respectively. Scanning electron microscope images showed that the surface textures of the AN films on the (001), (110), and (111)STO substrates took the form of a lattice-shaped pattern, a striped pattern, and trigonal pyramid-like structures, respectively. The AN film on the (001)STO had the largest relative dielectric constant of 748 in all films. The P-E hysteresis showed that the AN film on (001)STO exhibited antiferroelectricity and the other AN films deposited on (110) and (111)STO showed a ferroelectric property.
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