Dielectric and ferroelectric properties of multicomponent equiatomic calcium lead strontium titanate (Ca0.33Pb0.33Sr0.33)TiO3

Ferroelectric Lead Zirconate Titanate and Barium Titanate Nanotubes

Wetting of the pore walls of porous templates is a simple and convenient method to prepare nanotubes. Ferroelectric lead zirconate titanate and barium titanate nanotubes were fabricated by wetting of porous silicon templates of polymeric precursors. The ferroand piezoelectric properties of an individual ferroelectric either of a PZT or a BaTiO3 nanotube were electrically characterized by measur...

Dielectric and pyroelectric properties of barium strontium titanate films on orthorhombic substrates with „110... / / „100... epitaxy

The role of anisotropic misfit strains on the spontaneous polarization, dielectric properties, and pyroelectric response of 110 oriented Ba0.6Sr0.4TiO3 BST 60/40 thin films on 100 orthorhombic substrates is analyzed theoretically. The anisotropic in-plane strain state and the rotation of the elastic and the electrostrictive constants of the BST 60/40 films result in strongly directional and uni...

Tailoring dielectric properties of ferroelectric-dielectric multilayers

Influence of stoichiometry on the dielectric properties of sputtered strontium titanate thin films

The dielectric permittivity, dielectric quality factor ~inverse dielectric loss!, and lattice parameter of 140 nm sputtered SrTiO3 films were dependent on the oxygen partial pressure and total chamber pressure (O21Ar) during film growth. Films were grown at 25 and 75 mTorr ~mT! in an oxygen rich and oxygen deficient sputtering gas environment concurrently on ~100! SrTiO3 and ~111! Pt/~0001! Al2...

The effect of stress on the dielectric properties of barium strontium titanate thin films

Barium strontium titanate thin films are being developed as capacitors in dynamic random access memories. These films, grown on silicon substrates, are under tensile residual stress. By a converse electrostrictive effect, the in-plane tensile stress reduces the capacitance in the thickness direction of the film. We measured the substrate curvature change upon the removal of the film, and found ...