Birefringence Study of Ferroelectric Ordering in Oxygen Isotope Exchanged Systems SrTi(16O1-x18Ox)3

Yamanaka, K.; Wang, Ruiping; Itoh, Makoto; Iio, Katsunori

doi:10.1143/jpsj.70.3213

Cited by 31 publications

(23 citation statements)

References 13 publications

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“…Itoh et al [25,26] found that replacing 16 [27]. Furthermore, whilst SrTi 18 O 3 is ferroelectric at ambient pressure, the ferroelectricity vanishes when hydrostatic pressure is applied [28,29].…”

Section: Introductionmentioning

confidence: 99%

Interaction between quantum paraelectricity and ferroelasticity in SrTiO₃

Hayward

Morrison

Scott

2005

J. Phys.: Condens. Matter

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The dielectric susceptibility of SrTiO 3 is measured as a function of temperature between room temperature and 32 K. These data show an anomaly at approximately 105 K, which is associated with the cubic-tetragonal ferroelastic phase transition. The form of this anomaly is shown to be consistent with biquadratic coupling between the ferroelectric and ferroelastic modes. The quantum paraelectric state of SrTiO 3 is studied in the framework of a quantum mechanical Landau potential. The saturation temperature is determined from published measurements of the dielectric susceptibility at very low temperatures. When the coupling to the ferroelastic mode is accounted for, the saturation temperature obtained from these measurements (θ S = 20(1) K) is the same as that seen in phase diagrams for the ferroelectric transition, such as T C versus chemical dopant or O isotope content.

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Section: Introductionmentioning

confidence: 99%

Interaction between quantum paraelectricity and ferroelasticity in SrTiO₃

Hayward

Morrison

Scott

2005

J. Phys.: Condens. Matter

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“…[6][7][8] The ferroelectricity has been confirmed by the observation of the D-E hysteresis loop below T c accompanied with the sharp peak of the dielectric constant. [6][7][8][9] This phenomenon has attracted much attention since its discovery because of a successful example of the artificial control of the quantum fluctuation by the isotope exchange.…”

Section: Introductionmentioning

confidence: 99%

Isotope effect on the soft-mode dynamics ofSrTiO3studied by Raman scattering

et al. 2005

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The oxygen isotope effect on the soft-mode dynamics in quantum paraelectric SrTi͑ O atoms are 0.23 ͓STO18-23͔ and 0.32 ͓STO18-32͔, which are less than the critical value x c ͑=0.33͒. In STO18-32, whose exchange rate is just below x c , the soft E u mode shows hardening behavior in a low-temperature region indicating the onset of local ferroelectric order. On the other hand, the soft E u mode in STO18-23 does not show any hardening behavior until 0 K. The enhancement of the inhomogeneity in the crystal by the exchange of 18 O is concluded to play an essential role in the soft-mode dynamics of the quantum paraelectric and ferroelectric STO18-x. The relation between the soft-mode dynamics and quantum fluctuation is discussed.

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“…Although our previous our study [37] revealed that locally variant mixtures of eight triclinic polar domains with d 22 being the coupling constant, it can be reduced to higher symmetry mm2 by taking the coexistence of ferroelastic domains into account [36]. Recently, our measurements of optical birefringence for STO18 strongly support the orthorhombic mm2 [38].…”

Section: Local Symmetry Of Ferroelectric Nano-regionsmentioning

confidence: 58%

Phase transition and random-field induced domain wall response in quantum ferroelectrics SrTi¹⁸O₃: review and perspective

Itoh

Yagi

Uesu

et al. 2004

Science and Technology of Advanced Materials

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The oxygen isotope exchange of 16 O by 18 O in SrTiO 3 causes a drastic change from paraelectric to ferroelectric, due to the suppression of quantum fluctuation. The phase transition and origin of the huge domain wall response were evaluated by dielectric, magnetic (NMR), and optical measurements (SHG, light scattering). The results obtained corroborate (1) smeared ferroelectric transition at T c due to quenched random field, (2) a quite large dielectric contribution from domain walls, (3) incomplete softening of the transverse optic mode, and (4) a large contribution from the relaxational mode to the phase transition. Quantitative explanations, given to individual results, may give hints to grasp the mechanism for the evolution of ferroelectricity, in which quantum fluctuation and random fields are dominant perturbations. Finally, some of the news studies on the SrTiO 3 were also introduced. q

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Birefringence Study of Ferroelectric Ordering in Oxygen Isotope Exchanged Systems SrTi(¹⁶O_1-x¹⁸O_x)₃

Cited by 31 publications

References 13 publications

Interaction between quantum paraelectricity and ferroelasticity in SrTiO₃

Interaction between quantum paraelectricity and ferroelasticity in SrTiO₃

Isotope effect on the soft-mode dynamics ofSrTiO3studied by Raman scattering

Phase transition and random-field induced domain wall response in quantum ferroelectrics SrTi¹⁸O₃: review and perspective

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Birefringence Study of Ferroelectric Ordering in Oxygen Isotope Exchanged Systems SrTi(16O1-x18Ox)3

Cited by 31 publications

References 13 publications

Interaction between quantum paraelectricity and ferroelasticity in SrTiO3

Interaction between quantum paraelectricity and ferroelasticity in SrTiO3

Isotope effect on the soft-mode dynamics ofSrTiO3studied by Raman scattering

Phase transition and random-field induced domain wall response in quantum ferroelectrics SrTi18O3: review and perspective

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Birefringence Study of Ferroelectric Ordering in Oxygen Isotope Exchanged Systems SrTi(¹⁶O_1-x¹⁸O_x)₃

Interaction between quantum paraelectricity and ferroelasticity in SrTiO₃

Interaction between quantum paraelectricity and ferroelasticity in SrTiO₃

Phase transition and random-field induced domain wall response in quantum ferroelectrics SrTi¹⁸O₃: review and perspective