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For applying tensile or compressive uniaxial strain to functional thin films,we propose a novel approach in combining a piezoelectric-based device and atechnical metallic substrate used widely in the 2nd generation coatedconductors (i.e. superconducting tapes). A strain-induced shift of thesuperconducting transition temperature of 0.1 K for Co-doped BaFe2As2 wasobserved along [100] direction, corresponding to a uniaxial pressure derivativedTc/dp100=-4 K/GPa. For Mn3CuN, a uniaxial strain derivative along [100]direction of the Curie temperature dTC/de100=13 K/% was observed. The currentapproach is applicable to various functional thin films in a wide range oftemperatures.

Novel method to study strain effect of thin films using a piezoelectric-based device and a flexible metallic substrate