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Influence of hysteresis loop shape on the nonlinear dynamics of shape memory alloy oscillator excited by non-ideal energy sources
(2014-12-10)
The dynamical response of systems with shape memory alloy (SMA) presents a different behavior due to their nonlinear characteristic. SMA nonlinear response is associated with adaptive dissipation related to their hysteretic ...
Dielectric and ferroelectric properties of PZT and PT thin films for saw sensors applications
(2004-12-01)
It is very important for the building of the SAW devices to study dielectric and ferroelectrics properties because every SAW device is based in piezoelectric effect that it is made up to transform an electric sign in the ...
On the equivalence of the mechanisms governing switching and hysteresis phenomena
(1992-01-01)
The nucleation and growth model, which is usually applied to switching phenomena, is adapted for explaining surface potential measurements on the P(VDF-TrFE) (polyvinylidene fluoride-trifluoroethylene) copolymer obtained ...
Nanoscale polarization relaxation and piezoelectric properties of SBN thin films
(Ieee, 2016-01-01)
Randomly oriented Sr0.75Ba0.25Nb2O6 thin films have been deposited on Pt(111)/Ti/SiO2/Si substrates using a polymeric chemical route to study their peculiar nanopolar structures and local ferroelectric properties using ...
Nanoscale polarization relaxation and piezoelectric properties of SBN thin films
(2016-09-27)
Randomly oriented Sr0.75Ba0.25Nb2O6 thin films have been deposited on Pt(111)/Ti/SiO2/Si substrates using a polymeric chemical route to study their peculiar nanopolar structures and local ferroelectric properties using ...
Dielectric and fatigue properties of Pb(Zr0.53Ti0.47)O-3 thin films prepared from oxide precursors method
(Materials Research Society, 2005-01-01)
Fatigue is an important problem to be considered if a ferroelectric film is used for non-volatile memory devices. In this phenomena, the remanent polarization and coercive field properties degrades in cycles which increase ...
Dielectric and fatigue properties of Pb(Zr0.53Ti 0.47)O3 thin films prepared from oxide precursors method
(2005-06-20)
Fatigue is an important problem to be considered if a ferroelectric film is used for non-volatile memory devices. In this phenomena, the remanent polarization and coercive field properties degrades in cycles which increase ...
Funcional lead-free composite
(2014-01-01)
In the present work we report the properties of NaNbO3 ceramic particles obtained by microwave-assisted hydrothermal method and its use in composites with PVDF polymer. Results indicated that Na2Nb 2O6.H2O particles can ...
Physical properties of self-polarized PZT thin films at compositions around the morphotropic phase boundary
(Trans Tech Publications Ltd, 2014-01-01)
The physical properties of self-polarized PbZr1-xTixO3 thin films with no preferential orientation in a range of compositions 0.46 <= x <= 0.50 were investigated. Structural analysis revealed the coexistence of ...
Yttrium iron garnet heterocoagulated by silica
(2002-09-01)
Coated purpose of homogeneous distribution as a second phase is introduced in magnetic systems. Yttrium iron garnet (YIG) shows special interest as magnetic dye, microwave absorber, and magnetic fluids when heterocoagulated ...