Impact of anisotropic strains on low-frequency dielectric properties and room-temperature polar phases of SrTiO3 epitaxial thin films

Impact of anisotropic strains on low-frequency dielectric properties and room-temperature polar phases of SrTiO3 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 SrTiO3 thin films.

► The thermodynamic theory of anisotropically strained SrTiO3 thin film is developed.
► 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 SrTiO3 thin films.