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Inherent nanoscale structural instabilities near morphotropic boundaries in ferroelectric solid solutions
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10.1063/1.2771095
/content/aip/journal/apl/91/7/10.1063/1.2771095
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/7/10.1063/1.2771095
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Variation of the quartic invariant terms of Eq. (1) with the composition parameter . The morphotropic boundary (MB) located at is defined by . The intersections of the lines and correspond to two tricritical points, one in the rhombohedral phase at and one in the tetragonal phase at .

Image of FIG. 2.
FIG. 2.

(Color online) Relation of the high-temperature portion of the diffusionless morphotropic boundary (MB) diagram (a) to the variation of the equilibrium absolute value of polarization, , in the composition-temperature plane (b). The Curie line is linear in . The line where the paraelectric cubic phase is in equilibrium with the ferroelectric rhombohedral and tetragonal phases is quadratic in .

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/content/aip/journal/apl/91/7/10.1063/1.2771095
2007-08-16
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Inherent nanoscale structural instabilities near morphotropic boundaries in ferroelectric solid solutions
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/7/10.1063/1.2771095
10.1063/1.2771095
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