Effects of BaTiO3 and SrTiO3 as the buffer layers of epitaxial BiFeO3 thin films

BiFeO3 （BFO） thin films with BaTiO3 （BTO） or SrTiO3 （STO） as buffer layer were epitaxially grown on SrRuO3-covered SrTiO3 substrates. X-ray diffraction measurements show that the BTO buffer causes tensile strain in the BFO films, whereas the STO buffer causes compressive strain. Different ferroelect...

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