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Cited by 373

The DOI matches its Crossref record; 12 of the 12 references it cites were found in a registry or an index.

Towards a quantum theory of polarization in ferroelectrics: The case ofKNbO3

Resta, R., Posternak, M., Baldereschi, A.·1993·Physical Review Letters
DOI 10.1103/physrevlett.70.1010
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Abstract

The spontaneous macroscopic polarization of perovskite ${\mathrm{KNbO}}_{3}$ is calculated as a Berry's phase using the Bloch functions of the tetragonal crystal. The result P=0.35 C/${\mathrm{m}}^{2}$ supports the measured value 0.37 C/${\mathrm{m}}^{2}$ and implies that earlier data from hysteresis loops are too low. The polarization is linear in the ferroelectric distortion; the Born effective charges show strong variations from nominal ionic values and a large inequivalence of the O ions. Linearity posteriori demonstrates that the polarization of perovskites at finite temperature can be safely predicted assuming the ions frozen in their time-averaged positions.

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Metadata

Authors
Resta, R., Posternak, M., & Baldereschi, A.
Venue
Physical Review Letters
Publisher
American Physical Society (APS)
Published
1993-02-15
Volume
70
Issue
7
Pages
1010-1013
ISSN
0031-9007 (ISSN-L)
DOI
10.1103/physrevlett.70.1010
OpenAlex
W2066494106
Cited by
373
References
12
FWCI
9.23
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Towards a quantum theory of polarization in ferroelectrics: The case ofKNbO3. https://app.cochat.ai/papers/10.1103/physrevlett.70.1010
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Resta, R., Posternak, M., & Baldereschi, A. (1993). Towards a quantum theory of polarization in ferroelectrics: The case ofKNbO3. Physical Review Letters. https://doi.org/10.1103/physrevlett.70.1010

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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