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Simultaneous Stress and Field Control of Sustainable Switching of Ferroelectric Phases.

Finkel P, Staruch M, Amin A, Ahart M, Lofland SE - Sci Rep (2015)

Bottom Line: Direct tuning of this effect through combination of stress and applied electric field, confirmed both macroscopically and microscopically with x-ray and Raman scattering, reveals the local symmetry while sweeping through the transition with a low applied electric field (<0.2 MV/m) under mechanical stress.The observed change in local symmetry as determined by x-ray scattering confirms a proposed polarization rotation mechanism corresponding to a transition between rhombohedral and orthorhombic phases.These results shed more light onto the nature of this reversible transformation between two ferroelectric phases and advance towards the development of a wide range of ferroic and multiferroic devices.

View Article: PubMed Central - PubMed

Affiliation: US Naval research Laboratory, Washington DC, 20375.

ABSTRACT
In ferroelectrics, manifestation of a strong electromechanical coupling is attributed to both engineered domain morphology and phase transformations. However, realization of large sustainable and reversible strains and polarization rotation has been limited by fatigue, nonlinearity and hysteresis losses. Here, we demonstrate that large strain and polarization rotation can be generated for over 40 × 10(6) cycles with little fatigue by realization of a reversible ferroelectric-ferroelectric phase transition in [011] cut Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) relaxor ferroelectric single crystal. Direct tuning of this effect through combination of stress and applied electric field, confirmed both macroscopically and microscopically with x-ray and Raman scattering, reveals the local symmetry while sweeping through the transition with a low applied electric field (<0.2 MV/m) under mechanical stress. The observed change in local symmetry as determined by x-ray scattering confirms a proposed polarization rotation mechanism corresponding to a transition between rhombohedral and orthorhombic phases. These results shed more light onto the nature of this reversible transformation between two ferroelectric phases and advance towards the development of a wide range of ferroic and multiferroic devices.

No MeSH data available.


Related in: MedlinePlus

(a) The xrd pattern at 19 MPa at zero field (red) and at −0.18 MV/m (blue). Note the presence of the remanent of the orthorhombic (0 4 0) peak at E = −0.18 MV/m. Integrated intensity of (b) rhombohedral (220) and (c) orthorhombic (040) peaks as functions of electric field at 19 MPa. The lines serve as guides to the eye. (d) Electric field dependence of the lattice spacing of the R (2 2 0) and O (0 4 0) at 19 MPa. Both phases act as simple piezoelectrics with linear strain dependence.
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f4: (a) The xrd pattern at 19 MPa at zero field (red) and at −0.18 MV/m (blue). Note the presence of the remanent of the orthorhombic (0 4 0) peak at E = −0.18 MV/m. Integrated intensity of (b) rhombohedral (220) and (c) orthorhombic (040) peaks as functions of electric field at 19 MPa. The lines serve as guides to the eye. (d) Electric field dependence of the lattice spacing of the R (2 2 0) and O (0 4 0) at 19 MPa. Both phases act as simple piezoelectrics with linear strain dependence.

Mentions: Near 19 MPa Ec is near zero (Figure S1), and the phase is O for positive E > 0 or R for E < 0. Figure 4(a) shows the results of conventional Bragg-Brentano measurements of the cubic () peak at 19 MPa. Figure 4(b,c) show the intensity of the principle peaks of the two phases as E is cycled ± 0.2 MV/m, clearly demonstrating reversibility. Remarkably E field cycling exhibits much lower hysteresis as compared to 180o polarization switching with coercive field (EC) ~ 0.67 MV/m. Figure 4(d) shows the E dependence of the d spacing of the cubic () reflections [i.e. O (0 4 0) and R (2 2 0)]. It is notable that the lattice parameters of both phases are linearly dependent on field, as though each phase were behaving as simple piezoelectrics. No other metastable intermediate phases were observed between the two stable states while cycling electrically through the transition.


Simultaneous Stress and Field Control of Sustainable Switching of Ferroelectric Phases.

Finkel P, Staruch M, Amin A, Ahart M, Lofland SE - Sci Rep (2015)

(a) The xrd pattern at 19 MPa at zero field (red) and at −0.18 MV/m (blue). Note the presence of the remanent of the orthorhombic (0 4 0) peak at E = −0.18 MV/m. Integrated intensity of (b) rhombohedral (220) and (c) orthorhombic (040) peaks as functions of electric field at 19 MPa. The lines serve as guides to the eye. (d) Electric field dependence of the lattice spacing of the R (2 2 0) and O (0 4 0) at 19 MPa. Both phases act as simple piezoelectrics with linear strain dependence.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4561888&req=5

f4: (a) The xrd pattern at 19 MPa at zero field (red) and at −0.18 MV/m (blue). Note the presence of the remanent of the orthorhombic (0 4 0) peak at E = −0.18 MV/m. Integrated intensity of (b) rhombohedral (220) and (c) orthorhombic (040) peaks as functions of electric field at 19 MPa. The lines serve as guides to the eye. (d) Electric field dependence of the lattice spacing of the R (2 2 0) and O (0 4 0) at 19 MPa. Both phases act as simple piezoelectrics with linear strain dependence.
Mentions: Near 19 MPa Ec is near zero (Figure S1), and the phase is O for positive E > 0 or R for E < 0. Figure 4(a) shows the results of conventional Bragg-Brentano measurements of the cubic () peak at 19 MPa. Figure 4(b,c) show the intensity of the principle peaks of the two phases as E is cycled ± 0.2 MV/m, clearly demonstrating reversibility. Remarkably E field cycling exhibits much lower hysteresis as compared to 180o polarization switching with coercive field (EC) ~ 0.67 MV/m. Figure 4(d) shows the E dependence of the d spacing of the cubic () reflections [i.e. O (0 4 0) and R (2 2 0)]. It is notable that the lattice parameters of both phases are linearly dependent on field, as though each phase were behaving as simple piezoelectrics. No other metastable intermediate phases were observed between the two stable states while cycling electrically through the transition.

Bottom Line: Direct tuning of this effect through combination of stress and applied electric field, confirmed both macroscopically and microscopically with x-ray and Raman scattering, reveals the local symmetry while sweeping through the transition with a low applied electric field (<0.2 MV/m) under mechanical stress.The observed change in local symmetry as determined by x-ray scattering confirms a proposed polarization rotation mechanism corresponding to a transition between rhombohedral and orthorhombic phases.These results shed more light onto the nature of this reversible transformation between two ferroelectric phases and advance towards the development of a wide range of ferroic and multiferroic devices.

View Article: PubMed Central - PubMed

Affiliation: US Naval research Laboratory, Washington DC, 20375.

ABSTRACT
In ferroelectrics, manifestation of a strong electromechanical coupling is attributed to both engineered domain morphology and phase transformations. However, realization of large sustainable and reversible strains and polarization rotation has been limited by fatigue, nonlinearity and hysteresis losses. Here, we demonstrate that large strain and polarization rotation can be generated for over 40 × 10(6) cycles with little fatigue by realization of a reversible ferroelectric-ferroelectric phase transition in [011] cut Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) relaxor ferroelectric single crystal. Direct tuning of this effect through combination of stress and applied electric field, confirmed both macroscopically and microscopically with x-ray and Raman scattering, reveals the local symmetry while sweeping through the transition with a low applied electric field (<0.2 MV/m) under mechanical stress. The observed change in local symmetry as determined by x-ray scattering confirms a proposed polarization rotation mechanism corresponding to a transition between rhombohedral and orthorhombic phases. These results shed more light onto the nature of this reversible transformation between two ferroelectric phases and advance towards the development of a wide range of ferroic and multiferroic devices.

No MeSH data available.


Related in: MedlinePlus