Tuning photovoltaic response in Bi2FeCrO6 films by ferroelectric poling
نویسندگان
چکیده
منابع مشابه
Ultrafast photovoltaic response in ferroelectric nanolayers.
We show that light drives large-amplitude structural changes in thin films of the prototypical ferroelectric PbTiO3 via direct coupling to its intrinsic photovoltaic response. Using time-resolved x-ray scattering to visualize atomic displacements on femtosecond time scales, photoinduced changes in the unit-cell tetragonality are observed. These are driven by the motion of photogenerated free ch...
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We examine the photo-assisted polarization loop in a BiFeO3 thin film under UV light illumination. BiFeO3 thin film prepared by pulsed laser deposition method onto the BaTiO3 thin film and the polarization behavior has been measured under poling voltage. Our results show the engineered polarization due to controllable schottky barrier under inverse poling voltage. This control on schottky barri...
متن کاملPyroelectric response of ferroelectric thin films
A thermodynamic formalism is developed to calculate the pyroelectric coefficients of epitaxial ~001! Ba0.6Sr0.4TiO3 ~BST 60/40! and Pb0.5Zr0.5O3 ~PZT 50/50! thin films on ~001! LaAlO3 , 0.29 LaAlO3 :0.35(Sr2TaAlO6) ~LSAT!, MgO, Si, and SrTiO3 substrates as a function of film thickness by taking into account the formation of misfit dislocations at the growth temperature. The role of internal str...
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The dielectric susceptibility and dielectric tunability of the temperature-graded BaTiO3 thin films are investigated by using a modified transverse Ising model, taking the four-spin interaction and quantum fluctuation into account. There is a broad and smooth peak of the dielectric susceptibility at low temperature except for the sharp dielectric peak corresponding to the phase-transition tempe...
متن کاملSelf-Poling of BiFeO3 Thick Films.
Bismuth ferrite (BiFeO3) is difficult to pole because of the combination of its high coercive field and high electrical conductivity. This problem is particularly pronounced in thick films. The poling, however, must be performed to achieve a large macroscopic piezoelectric response. This study presents evidence of a prominent and reproducible self-poling effect in few-tens-of-micrometer-thick B...
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ژورنال
عنوان ژورنال: Nanoscale
سال: 2018
ISSN: 2040-3364,2040-3372
DOI: 10.1039/c8nr03137a