Results 1 to 10 of about 8,594 (229)

Critical temperature below the Curie temperature of ferroelectric ceramics PZT

open access: yesJournal of Advanced Dielectrics, 2021
The article presents the results of research the pre-transitional features of the behavior of solid solutions based on lead zirconate-titanate. The presence of a “special” critical temperature Td on the temperature dependences of the permittivity 𝜀(T ...
D. V. Kuzenko
doaj   +1 more source

Study of Mechanical Properties and Thermal Conduction of Polymer/Ceramic Nanocomposites [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2020
A composite materials were prepared using a polymeric blend of epoxy resin and unsaturated polyester as a matrix material, and using a nanoceramic powder Lead Zirconium Titanate as a reinforcement material in different adding ratios( 2wt % & 6wt ...
Ahmad AL - Falahi
doaj   +1 more source

PEROVSKITES AND OTHER FRAMEWORK STRUCTURE CRYSTALLINE MATERIALS (BOOK' FIRST PAGES AND PREFACE)

open access: yesMaterials and Devices, 2021
Perovskites are among the most famous materials due to their exceptional properties: they present nearly all existing types of interesting properties, in particular as ferroics or multiferroics, they may be insulators, (super)conductors, or ...
Saint-Grégoire P., Smirnov M.
doaj   +1 more source

Maximizing the Value of Decay Rate for a Vibrated Beam [PDF]

open access: yesEngineering and Technology Journal, 2018
This paper presents design controllers by using control strategies and (LMI) in order to attenuate the vibrations of a beam. An Aluminum beam with fixed-fixed configuration was chosen as an application example of (AVC) of structure.
Sherko Ibrahem, Tahseen Othman
doaj   +1 more source

Piezoelectric Actuators for Tactile and Elasticity Sensing

open access: yesActuators, 2020
Piezoelectric actuators have achieved remarkable progress in many fields, being able to generate forces or displacements to perform scanning, tuning, manipulating, tactile sensing or delivering functions.
Javier Toledo   +3 more
doaj   +1 more source

Derivation of losses from impedance spectrum for contour modes of ceramic resonator

open access: yesJournal of Asian Ceramic Societies, 2020
Method of loss coefficients calculation from mechanical quality factors of transversal vibration modes is presented. Theoretical formulae are derived for the contour mode of thin square plate and width extensional mode of a thin rectangular plate ...
Jiří Erhart   +3 more
doaj   +1 more source

Development of Cutting Device with Enlargement Mechanism of Displacement

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2008
A new cutting device driven by an enlargement mechanism with a PZT drive has been developed to realize positioning the cutting tool from nm to mm. In this study, the mechanical principal of a newly developed enlargement mechanism consisting of fluid ...
Yoshitaka MORIMOTO   +3 more
doaj   +1 more source

INFLUENCE OF DISTURBED LAYERS ON THE DIELECTRIC PROPERTIES OF FERROELECTRIC THIN FILM CAPACITORS

open access: yesРоссийский технологический журнал, 2016
Capacitor ferroelectric structures are the basis of many modern microelectronic devices, including non-volatile memory, piezoelectric micro-actuators, sensors etc. Miniaturization of such devices requires a reduction in the ferroelectric layer thickness,
P. P. Lavrov
doaj   +1 more source

Performance enhancement of ultrasonic transducer made of textured PNN-PZT ceramic

open access: yesJournal of Advanced Dielectrics, 2022
In this paper, 0.36Pb(Ni[Formula: see text]Nb[Formula: see text])O3–0.24PbZrO3–0.40PbTiO3(PNN-PZT) ceramic was prepared, and texture engineering was performed on this PNN-PZT ceramic to improve its electromechanical properties and temperature stability ...
Lang Bian   +10 more
doaj   +1 more source

Asymmetrical PZT applied to active reduction of asymmetrically vibrating beam – semi-analytical solution [PDF]

open access: yesArchives of Acoustics, 2022
The article extended the idea of active vibration reduction of beams with symmetric modes to beams with asymmetric modes. In the case of symmetric modes, the symmetric PZT (s-PZT) was used, and the optimization of the problem led to the location of the s-
Adam Brański, Romuald Kuras
doaj   +1 more source

Home - About - Disclaimer - Privacy