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Structural correlations of the enhancement of dielectric permittivity in the system
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View: Figures


Image of FIG. 1.
FIG. 1.

Selected area diffraction patterns for and specimens. (a) and (a′) are the SAEDPs from [010] zone axis for and , respectively, and (b) and (b′) are the [] zone axis SAEDPs for and , respectively.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Low magnification HREM image along [] observing direction to show the modulation structure of the specimen; (b) is the atomic scale HREM image of one modulation cell, and (d) is the corresponding SAEDP; (c) is the simulated HREM image of the structure based on the model shown in Figure 3(a); (e) is the atomic scale HREM image taken along the [001] axis direction. (In (f), the blue balls represent the Ta atoms at the center of pentagonal bipyramids; the gray balls represent the Ta atoms at the octahedral center and the red balls represent oxygen atoms.)

Image of FIG. 3.
FIG. 3.

(Color online) (a) atomic octahedral chain structure in the specimen. The blue frames highlight the chain structure; (b) is the simplified atomic chain model by treating the and octahedra as heterometal atoms linked by oxygen (metal atom is in the base lattice and metal atom causes the modulation by replacing in the chain); (c) and (d) are the vibration mode representing in reciprocal space and relative intensity based on the model of (b). The black lines are for base structure, and the red ones are those for modulated ones.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Structural correlations of the enhancement of dielectric permittivity in the (Ta2O5)0.92(TiO2)0.08 system