Stress induced ferroelectricity in SrTiO3

Ferroelectricity in Strain-FreeSrTiO3Thin Films

“…Surface ferroelectricity in a few monolayers of SrTiO 3 has been predicted and observed [5][6][7]. Bulk piezoelectricity and ferroelectricity in the volume of SrTiO 3 can be induced by Ca doping [8], electric field [3,9], mechanical stress [10], and 18 O substitution [11] in the low-temperature regime. It has been demonstrated that tensile-strained commensurate epitaxial STO films can be ferroelectric at room temperature [12,13].…”

Interaction between quantum paraelectricity and ferroelasticity in SrTiO3

“…Burke and Pressley [14] and Uwe and Sakudo [15] found that application of a [100] uniaxial stress induced ferroelectricity in SrTiO 3 . Fujii et al [16] then determined a phase diagram for the paraelectric-ferroelectric phase transition in (σ, T ) space.…”

Anomalous ferroelectric switching dynamics in single crystalline SrTiO3

“…M.Itoh et al 10,11 observed that low temperature (below 23 K) ferroelectricity was induced in single crystalline STO by isotope exchange of O 16 by O 18 . Low temperature ferroelectricity can be induced in STO by cation doping (such as Ca) and by mechanical stress as reported by Bednorz et al 12,13 and others 14,15 . The appearance of ferroelectric instability in STO has also been reported near antiphase domain boundaries at low temperatures below the antiferrodistortive transition 16 .…”