Thermal equilibrium noise with 1/f spectrum from frequency independent dielectric losses in barium strontium titanate
نویسندگان
چکیده
منابع مشابه
Dielectric tunability of graded barium strontium titanate multilayers: Effect of thermal strains
of thermal strains M. B. Okatan, M. W. Cole, and S. P. Alpay Materials Science and Engineering Program, Department of Chemical, Materials, and Biomolecular Engineering, University of Connecticut, Connecticut 06269, USA Institute of Material Science, University of Connecticut, Connecticut 06269, USA U. S. Army Research Laboratory, Weapons and Materials Research Directorate, Aberdeen Proving Grou...
متن کاملDielectric 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...
متن کاملNoise characteristics of an oscillator with a barium strontium titanate (BST) varactor
The phase noise of an oscillator with a thin-film barium strontium titanate (BST) capacitive tuning element, or varactor, is characterised and benchmarked against the same oscillator with a silicon semiconductor junction varactor. Phase noise tracks closely with varactor Q within a specific voltage range as expected. Compared to the semiconductor varactor-based oscillator, the BST-based oscilla...
متن کاملThe 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 ...
متن کاملPyroelectric properties of barium strontium titanate films: Effect of thermal stresses
A nonlinear thermodynamic model is used to investigate the influence of thermal stresses on the room temperature RT pyroelectric properties of 001 -textured polycrystalline barium strontium titanate BaxSr1−xTiO3, BST films with four different compositions on three integrated circuit-friendly substrates: Si, 0001 and 1̄1̄20 sapphire. It is found that the in-plane tensile thermal strain in BST incr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2010
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.3327446