Lead Titanate Zirconate
Mostrando 1-8 de 8 artigos, teses e dissertações.
-
1. A ‘Universal’ Bottom-up Sol-gel Based Synthesis of Pzt (1-x)/x Submicrometric Structures: 1. Dynamic Light Scattering Characterization of Precursor Stability and Aggregation Kinetics
This work proposes an extension of a sol-gel based synthesis route for obtaining highly hydrophobic, uniformly nanosized and stable precursor solutions of lead zirconate titanate [Pb(Zr1-xTix)O3 or PZT (1-x)/x] for any given (1-x)/x Zr:Ti ratio. Several representative PZT compositions were chosen and their precursors were studied by taking into account the t
Mat. Res.. Publicado em: 25/08/2015
-
2. Shear wave propagation in piezoelectric-piezoelectric composite layered structure
The propagation behavior of shear wave in piezoelectric composite structure is investigated by two layer model presented in this approach. The composite structure comprises of piezoelectric layers of two different materials bonded alternatively. Dispersion equations are derived for propagation along the direction normal to the layering and in direction of la
Lat. Am. j. solids struct.. Publicado em: 2014
-
3. Synthesis and characterization of PB IND.1-XR IND.XZR IND.0,40TI IND.0,60O IND.3(R = La, Ba) / Síntese e caracterização estrutural e dielétrica de compostos ferroelétricos PB IND.1-XR IND.XZR IND.0,40TI IND.0,60O IND.3(R = La, Ba)
O titanato e zirconato de chumbo PB(ZR1-yTIy)O IND.3é um material ferroelétrico de estrutura perovskita que tem sido aplicado como transdutores, amplificadores, sensores piezoelétricos, piroelétricos e memórias ferroelétricas. É bem estabelecido que a incorporação de íons de LA POT.3+ou BA POT.2+nos sítios ocupados pelo PBno sistema PB(ZR1-yTIy)O(
Publicado em: 2011
-
4. Study of pyroelectric activity of PZT/PVDF-HFP composite
Flexible, free-standing piezo and pyroelectric composite with 0 to 3 connectivity was made up from Lead Zirconate Titanate (PZT) powder and poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) copolymer. The pyroelectric and the piezoelectric longitudinal (d33) coefficients were measured. A 50/50 vol.% PZT/PVDF-HFP composite resulted in piezo and pyroele
Materials Research. Publicado em: 2003-12
-
5. Uso da técnica do pulso eletroacústico para o estudo de polietilenos e titanato zirconato de chumbo (PZT). / Use of the pulsed electroacoustic technique for the study polyethilens and lead zirconate titanate (PZT).
The purpose this work was using to PEA method for investigation of the ferroelectrics response in PZT and space charge formation in polymeric materials (PE, XLPE) used as electrical insulation for high voltage devices. The PEA method is based on propagation acoustic signal generated by the application of a short electric field pulse, typically 5 ns in durati
Publicado em: 2003
-
6. Hot-pressed transparent PLZT ceramics from low cost chemical processing
Lanthanum-modified lead zirconate titanate (PLZT) ceramics were obtained with high transmittance in the visible range by a combination of an inexpensive chemical processing and hot pressing. Optical, microstructural, pyroelectric, ferroelectric and dielectric properties characterized in this study attested the applicability of the employed method in the prod
Materials Research. Publicado em: 2001-10
-
7. Electroactive properties of flexible piezoelectric composites
A flexible piezoelectric composite with 0-3 connectivity, made from Lead Zirconate Titanate (PZT) powder and vegetable-based polyurethane (PU), was doped with small amount of semiconductor powder. As a result a composite with 0-0-3 connectivity was obtained. The nature of absorption and steady state electrical conduction and the dielectric behaviour have bee
Materials Research. Publicado em: 2001-07
-
8. Effects of the atmosphere and substrate on the crystallization of PLZT thin films
Lead lanthanum zirconate titanate [PLZT (9/65/35)] thin films were prepared by dip-coating on Si (100) or Si/Ti/Pt (100) substrates using a polymeric precursor solution and annealed at 650 °C for 3 h. Perovskite phase formation of the PLZT thin films and microstructure were analysed using XRD and SEM. Effects of Si (100), Si/Ti/Pt (100) substrates and atmos
Materials Research. Publicado em: 2000-07