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Impact of perovskite layer stacking on dielectric responses in Dion–Jacobson homologous series
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View: Figures


Image of FIG. 1.
FIG. 1.

XRD patterns of and .

Image of FIG. 2.
FIG. 2.

Frequency dependence of the dielectric constant and dielectric loss for and at room temperature.

Image of FIG. 3.
FIG. 3.

Variation in the dielectric constant with the number of the octahedral units in and as well as Ruddlesden-Popper (◼) and Aurivillius (○) phases. Data include the bulk values of Ruddlesden-Popper with (Refs. 11 and 12) and AU with ( and ) (Refs. 13 and 14), (, , and ) (Refs. 15 and 16), (, Ref. 17), ( and ) (Ref. 18), (, , , and ) (Refs. 19 and 20), and (Ref. 20). The fitted lines are a guide for the eyes.

Image of FIG. 4.
FIG. 4.

Raman scattering spectra of and at room temperature.

Image of FIG. 5.
FIG. 5.

(a) Frequency and intensity of the lowest-frequency mode in and . (b) Relationship between the squared frequency of the lowest-frequency modes and the dielectric constant in and . For a comparison, the results of are also included (Refs. 11 and 12).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Impact of perovskite layer stacking on dielectric responses in KCa2Nan−3NbnO3n+1(n=3–6) Dion–Jacobson homologous series