Effects of interface on the dielectric properties of Ba0.6Sr0.4TiO3 thin film capacitors

Systematic investigation of the annealing temperature and composition effects on the dielectric properties of sol–gel BaxSr1−xTiO3 thin films

“…It is shown that the appearing Curie temperature is strongly reduced by increasing the thickness of a dead layer. The presence of an interfacial dead layer could be confirmed by a study with thin films of different thickness, increasing the contribution of the dead layer in the permittivity [26][27][28], coupled with Transmission Electronic Microscopy at the interface region [29,30]. Dielectric permittivity and losses measured at 10kHz as a function of external dc electric field at ambient conditions have been performed (Fig.…”

Surface chemical states of barium zirconate titanate thin films prepared by chemical solution deposition

“…More details have been described in the previous literature [20]. Before spin coating on the 3 (BZT) thin films grown on Pt/Ti/SiO 2 /Si(1 0 0) substrates were prepared by chemical solution deposition. The structural and surface morphology of BZT thin films has been studied by X-ray diffraction (XRD) and scanning electron microscope (SEM).…”

“…Barium strontium titanate (Ba, Sr)TiO 3 (BST) thin films have recently become very attractive for applications in decoupling capacitors, storage capacitors, and dielectric field tunable elements for high frequency devices [1][2][3]. The high dielectric constant and low loss make BST one of the promising candidates for DRAM and tunable microwave device applications.…”

Improved Ferroelectric Phase Shifter by Inserting Spiral Inductors into Ground

“…Therefore, low loss and low cost microwave phase shifters are required to improve performance and reduce the cost of phase arrays to ensure widespread application. BaSrTiO 3 (BST) thin films have been investigated as a potential low cost voltage tunable element for microwave circuit applications because of their high tunability, relatively low loss, and fast switching speed [1][2][3][4][5][6][7]. At present, several groups have implemented phase shifters using BST thin films [8][9][10][11][12][13].…”