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Article Dans Une Revue Applied Physics Letters Année : 2010

Ferroelectric BaTiO3 single crystal under superstrong electric fields up to 55 MV/m: A comparative experimental and theoretical study

Résumé

We investigated the effect of huge electric field up to E=55 MV/m on tetragonal ferroelectric phase of BaTiO3 single crystal. Both lattice parameters and the dielectric susceptibility along the polar axis were determined. The induced polarization shows a continuous increase up to 20% of the spontaneous polarization. The longitudinal d(33) and transverse d(31) piezoelectric coefficients were also determined. The experimental data are described by a phenomenological approach. Interestingly, an intermediate critical electric field value of E similar to 25 MV/m was evidenced suggesting that the physics below and above this value are different
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hal-00582977 , version 1 (04-04-2011)

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I.N. Leontyev, O.E. Fesenko, N.G. Leontyev, B. Dkhil. Ferroelectric BaTiO3 single crystal under superstrong electric fields up to 55 MV/m: A comparative experimental and theoretical study. Applied Physics Letters, 2010, 96 (14), pp.142904. ⟨10.1063/1.3386537⟩. ⟨hal-00582977⟩
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