Article ID Journal Published Year Pages File Type
9868408 Physics Letters A 2005 7 Pages PDF
Abstract
The spontaneous polarization and dielectric tunability of compositionally modulated n[Ba1−x1Srx1TiO3]/m[Ba1−x2Srx2TiO3] superlattices are investigated by using a modified transverse Ising model combining with two-peak probability distribution function. The spontaneous polarization can be enhanced with both the decrease of Sr composition concentration and the increase of interfacial coupling strength. In addition, a high dielectric tunability can be achieved by adjusting the compositional concentration, the layer numbers of two alternative materials in one unit cell and the temperature.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Physics and Astronomy (General)
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