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Impact of anisotropic strains on low-frequency dielectric properties and room-temperature polar phases of SrTiO 3 epitaxial thin films is investigated. The dielectric properties show a remarkable change as a function of anisotropic strains. The number of room-temperature polar phases is as twice as that of isotropically strained SrTiO 3 thin films.
Ba 6−3x Nd 8+2x Ti 18 O 54 with x=0.25 (simply BNT) dielectric thin films with a thickness of 320 nm have been prepared by pulsed laser deposition. The analysis results of X-ray diffraction showed that the as-deposited BNT films are amorphous, and the amorphous state is stable against a postannealing at temperature up to 850 °C. The dielectric constant of the BNT films...
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