In this study,(100)-oriented growth of Ba_(0.5)Sr_(0.5)TiO_3(BST)/LaNiO_3(LNO) stacks was obtained on Pt(111)/SiO_2/Si substrates by r.f.magnetron sputtering.The orientation of the subsequently deposited Ba_(0.5)Sr_(0.5)TiO_3 thin film was strongly affected by the LNO under layer,and the BST thin film deposited on the(100)LNO-coated Si substrate was also found to have a significant(100)-oriented texture.Effects of LNO interlayer on the dielectric properties of BST thin films were investigated.As a result,the tunability of BST thin film was greatly improved with the insertion of(100)-oriented LNO under layer with proper thickness.
