BaySr1 − yTiO3 buffer layers were developed for the strain tuning of perovskite-related oxides.
Strain effect in Sr1 − xLaxCuO2 was investigated by using BaySr1 − yTiO3 buffer layers.
BaySr1 − yTiO3 buffer layers can be used to tune the strain in other perovskite oxides.