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Low-T ferroelectricity in antiphase domain boundaries of SrTiO3

Conference Paper


Abstract


  • The ferroelectric transition of bulk strontium titanate is suppressed by a combination of two effects: (1) the structural changes produced by the antiferrodistortive transition at T a =105 K and (2) the quantum fluctuations. The structural changes are strongly perturbed within antiphase domain boundaries , and this in such a manner that a ferroelectric transition should occur in boundaries containing the tetragonal c -axis at T c ~ 35 to 40 K. This provides a possible explanation for a number of anomalies observed in SrTiO 3 at those temperatures. We report a new low- T anomaly on the lattice parameter c measured on a thin polished platelet. The above model is consistent with its sign and size, as well as with the sign and size of earlier birefringence measurements on similar samples. © 2002 Taylor and Francis.

Publication Date


  • 2002

Citation


  • Arzel, L., Hehlen, B., Tagantsev, A. K., Dénoyer, F., Liss, K. D., Currat, R., & Courtens, E. (2002). Low-T ferroelectricity in antiphase domain boundaries of SrTiO3. In Ferroelectrics Vol. 267 (pp. 317-322). doi:10.1080/00150190211011

Scopus Eid


  • 2-s2.0-0012237967

Start Page


  • 317

End Page


  • 322

Volume


  • 267

Abstract


  • The ferroelectric transition of bulk strontium titanate is suppressed by a combination of two effects: (1) the structural changes produced by the antiferrodistortive transition at T a =105 K and (2) the quantum fluctuations. The structural changes are strongly perturbed within antiphase domain boundaries , and this in such a manner that a ferroelectric transition should occur in boundaries containing the tetragonal c -axis at T c ~ 35 to 40 K. This provides a possible explanation for a number of anomalies observed in SrTiO 3 at those temperatures. We report a new low- T anomaly on the lattice parameter c measured on a thin polished platelet. The above model is consistent with its sign and size, as well as with the sign and size of earlier birefringence measurements on similar samples. © 2002 Taylor and Francis.

Publication Date


  • 2002

Citation


  • Arzel, L., Hehlen, B., Tagantsev, A. K., Dénoyer, F., Liss, K. D., Currat, R., & Courtens, E. (2002). Low-T ferroelectricity in antiphase domain boundaries of SrTiO3. In Ferroelectrics Vol. 267 (pp. 317-322). doi:10.1080/00150190211011

Scopus Eid


  • 2-s2.0-0012237967

Start Page


  • 317

End Page


  • 322

Volume


  • 267