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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) Measured bulk strain at 21 MPa as a function of the electric field. Insert shows the electrically driven strain at 19 MPa at different cycles. It should be noted that electric field bias needed to induce transition varies with applied pre-stress. (b) Volume fraction of the orthorhombic phase based on the results of Fig. 4(b,c). Note that there are no free parameters; i.e. this is not a fit.
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f5: (a) Measured bulk strain at 21 MPa as a function of the electric field. Insert shows the electrically driven strain at 19 MPa at different cycles. It should be noted that electric field bias needed to induce transition varies with applied pre-stress. (b) Volume fraction of the orthorhombic phase based on the results of Fig. 4(b,c). Note that there are no free parameters; i.e. this is not a fit.

Mentions: One way to compare the bulk strain ε (Fig. 5a) to the x-ray results is to express the average d spacing as


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) Measured bulk strain at 21 MPa as a function of the electric field. Insert shows the electrically driven strain at 19 MPa at different cycles. It should be noted that electric field bias needed to induce transition varies with applied pre-stress. (b) Volume fraction of the orthorhombic phase based on the results of Fig. 4(b,c). Note that there are no free parameters; i.e. this is not a fit.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f5: (a) Measured bulk strain at 21 MPa as a function of the electric field. Insert shows the electrically driven strain at 19 MPa at different cycles. It should be noted that electric field bias needed to induce transition varies with applied pre-stress. (b) Volume fraction of the orthorhombic phase based on the results of Fig. 4(b,c). Note that there are no free parameters; i.e. this is not a fit.
Mentions: One way to compare the bulk strain ε (Fig. 5a) to the x-ray results is to express the average d spacing as

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