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Nanoscale effects and polaronic relaxation in CaCu3Ti 4O12 compounds
(2011-01-01)
In the present communication, by using dielectric spectroscopy measurement, the correlations between Nanosized Barrier Layer Capacitance (NBLC) (Bueno et al. (2009) [7]) and the high frequency polaronic near-Debye dipolar ...
Dielectric behavior of epoxy/BaTiO3 composites using nanostructured ceramic fibers obtained by electrospinning
(2013-02-13)
Composite materials made of epoxy resin and barium titanate (BT) electrospun nanostructured fibers were prepared. BT fibers were synthesized from a sol based on barium acetate, titanium isopropoxide, and poly(vinyl ...
Dielectric properties of Pb Nb2 O6 ferroelectric ceramics at cryogenic temperatures
(2007-08-17)
Complex dielectric permittivity measurements in Pb Nb2 O6 ceramics were performed in a frequency and temperature range of 1 kHz-1 MHz and from 15 to 900 K, respectively. The results revealed two dielectric anomalies showing ...
Dielectric behaviour of CaCu3Ti4O12-epoxy composites
(Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials, 2014)
Non-Linear Dielectric Properties of PLMN-PT Relaxor Ferroelectrics
(Taylor & Francis Ltd, 2008-01-01)
Recent investigations on the non-linear (NL) dielectric properties of relaxor ferroelectrics systems, not only as ceramic bodies, but also, in thin films, have showed a significant technological and scientific interest. ...
Effects of powder preparation and sintering procedure on microstructure and dielectric properties of PLZT ceramics
(Int Inst Science Sintering (i I S S), 2003-09-01)
PLZT ceramics belong to one of the very important groups of functional materials that make a basis for the production of a large range of electronic devices. The microstructure and properties of ceramics depend on the ...
Dielectric spectroscopy on Bi3Zn2Sb3O14 ceramic: an approach based on the complex impedance
(Elsevier B.V., 2003-12-01)
The dielectric properties and loss of Bi1.5ZnSb1.5O7 a poor-semiconducting ceramic were investigated by impedance spectroscopy, in the frequency range from 5 Hz to 13 MHz. Electric measurements were performed from 100 to ...
Relationship between the dielectric and mechanical properties and the ratio of epoxy resin to hardener of the hybrid thermosetting polymers
(2006-06-08)
The relationship between the dielectric properties (dielectric constant, ε′, and loss factor, ε; activation energy, E a) and the ratio of epoxy resin (OG) to hardener of the epoxy resin thermosetting polymers was investigated. ...
Dielectric and pyroelectric properties of a composite of ferroelectric ceramic and polyurethane
(Springer, 2002-05-01)
Flexible piezo- and pyroelectric composite was made in the thin film form by spin coating. Lead Zirconate Titanate (PZT) ceramic powder was dispersed in a castor oil-based polyurethane (PU) matrix, providing a composite ...
Structural and dielectric properties of relaxor Sr0.5Ba 0.5Bi2Nb2O9 ceramic
(2010-03-01)
Sr0.5Ba0.5Bi2Nb2O 9 ceramic was prepared by a conventional solid state reaction method and studied using X-ray powder diffraction and dielectric measurements. At room temperature, an orthorhombic structure was confirmed ...