Pyroelectric properties of Gd-doped KVO3 and LiVO3

Kashid, A. P.; Patil, Vishwanath R.; Chavan, S H

doi:10.1007/bf02744596

Cited by 16 publications

(1 citation statement)

References 20 publications

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“…Of note are the works of Chavan and colleagues 32,33 reporting a polar phase of KVO 3 , for which we lack structural characterisation. The existence of such a polar state, though, supports the possibility that the usual phase of KVO 3 -here studied-may display antiferroelectric behaviour.…”

Section: Resultsmentioning

confidence: 85%

Antiferroelectricity in a family of pyroxene-like oxides with rich polymorphism

Aramberri

Íñiguez

2020

Commun Mater

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Antiferroelectrics have potential applications in energy conversion and storage, but are scarce, particularly among oxides that otherwise display rich ferroic behaviours. A question then arises whether potential antiferroelectrics are being overlooked, simply because their corresponding ferroelectric phase has not been discovered yet. Here we report a firstprinciples study suggesting that this is the case for a family of ABO 3 pyroxene-like materials, characterised by chains of corner-sharing BO 4 tetrahedra, a well-known member being KVO 3. The irregular tetrahedra have an electric dipole associated to them. In the most stable polymorph, the dipoles display an antipolar pattern with zero net moment. However, upon application of an electric field, half of the tetrahedra rotate, flipping the corresponding dipoles and reaching a ferroelectric state. We discuss the unique possibilities for tuning and optimisation of antiferroelectricity that these materials offer. We suggest that the structural features enabling this antiferroelectric behaviour can also be found in other all-important mineral families.

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Section: Resultsmentioning

confidence: 85%