Linear singularities and their motion in improper ferroelectrics

A. K. Tagantsev, E. B. Sonin

Research output: Contribution to journalArticlepeer-review

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Abstract

In improper ferroelectrics with the two-component order parameter (GMO-type) linear topological defects (circulation lines) are possible. They divide the regions of the rotational antiphase boundary with the different sense of rotation or correspond to a juncture of the antiphase boundary with the two polarization boundaries. It is shown that there exists a force applied to these lines due to the Lifshitz invariant induced by the shear strain. It is proposed to use this force for a selective influence on the antiphase boundaries. The domain structure of improper ferroelectrics was an object of thorough theoretical and experimental investigations (see e.g.1 and the references therein). This paper is devoted to theoretical investigation of linear topological defects in improper ferroelectrics with the two-component order parameter (GMO-type).

Original languageEnglish
Pages (from-to)297-300
Number of pages4
JournalFerroelectrics
Volume98
Issue number1
DOIs
StatePublished - 1 Oct 1989
Externally publishedYes

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