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XRD scan of the KNN/LSMO heterostructure onto substrate. The left inset shows scan of oblique (103) planes with detector position , 78.241°, and sample positions , for (103) KNN and LSMO reflections, respectively. The right inset shows the rocking curves of (002) KNN and LSMO peaks.
Temperature dependence of (a) dielectric permittivity and (b) loss tangent of the KNN/LSMO heterostructure from 1 kHz to 1 MHz. The inset shows the plot between and according to the Arrhenius law.
Inversed temperature dependence of ac conductivity of the KNN/LSMO heterostructure at various frequencies. The inset shows the plot of dc conductivity vs in the films.
Ferroelectric hysteresis loops under different electric fields for Pt/KNN/LSMO capacitor at room temperature.
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