Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 59 for “"lead zirconate titanate"”.
-
Organometallic chemical vapour deposition of lead zirconate titanate
Contains fulltext : mmubn000001_202791726.pdf (Publisher’s version ) (Open Access)
-
Direct printing of lead zirconate titanate thin films
Thus far, use of lead zirconate titanate (PZT) in MEMS has been limited due to the lack of process compatibility with existing MEMS manufacturing techniques. Direct printing of thin films eliminates the need for photolithographic patterning and etching, as well as allows for controlled deposition …
-
Sintering kinetics and properties of highly pure lead zirconate titanate ceramics
Lead zirconate titanate (PZT) has been widely applied in actuators and sensors due to its excellent piezoelectric and ferroelectric properties. However, impurities, one of the major problems involved in the mass production of PZT ceramics, have not attracted enough attention. In this thesis, …
-
Low-Temperature Densification of Lead Zirconate Titanate With Vanadium Pentoxide Additions
The addition of 0.1 to 6.0 w/o V(,2)O(,5) to lead zirconate titanate (PZT) ceramics promoted rapid densification below 975(DEGREES)C, thereby eliminating the need for PbO atmosphere control. The base PZT, Pb (Zr(,0.53)Ti(,0.47))O(,3), was prepared by coprecipitation from mixed oxides and butoxides. …
-
Electrically induced antiferroelectric-ferroelectric phase transformations in lead-zirconate titanate stannate ceramics
… phase transformations in the tin modified lead zirconate-lead titanate (Pb(Zr,Sn,Ti)O$\sb3,$ i.e., PZST) system were investigated. The field-induced transformation behavior was studied as a function of temperature, pressure, and microstructure. Emphasis is placed on (i) the thermal …
-
New perspectives of pure and lanthanum modified lead zirconate titanate crystalline solutions
… were found in the rhombohedral phase field of lead zirconate titanate (PZT). A hierarchy of domain structure was observed in the high temperature rhombohedral ferroelectric (FE) state, where local octahedral tilt domains on the scale of $\sim$50 A existed within the normal FE micron-sized …
-
Degradation in lead zirconate titanate thin film capacitors for non-volatile memory applications
… the degradation of ferroelectric properties in Lead Zirconate Titanate (PZT) thin film capacitors is presented in this work. Metal- Ferroelectric - Metal capacitors were prepared by sputtering and metal organic decomposition (MOD) techniques. Samples with several different film thicknesses were …
-
Structure-Property Relationship Investigations of Higher and Lower Valent Modified Lead Zirconate Titanate Ceramics
The studies on the dynamic behaviors of higher valent modified PZT revealed the presence of strong nonlinearities and induced relaxor characteristics under moderate AC drive for lower La-content compositions. TEM investigations demonstrated a breakdown of ferroelectric domains with increasing AC …
-
Structure-property relationships and phase stability in the tin-modified lead zirconate titanate crystalline solution series
… characteristics of high zirconium content lead zirconate titanate (PZT) ceramics. First, microstructural studies were done as a function of titanium content. An incommensurate phase was observed across much of the compositional range and was defined by the appearance of superlattice …
-
Study of Size Reduction, Reliability and Lead Safety of an Intra-Cochlear Lead-Zirconate-Titanate Micro-Actuator
… team has been developing a novel intra-cochlear lead-zirconate-titanate (PZT) micro-actuator to generate acoustic wave directly in the inner ear. Current design of the intra-cochlear micro-actuator is a square PZT diaphragm anchored at all four edges forming a tiny speaker. The purpose of this …
-
Residual Stress Development and Effect on the Piezoelectric Performance of Sol -Gel Derived Lead Zirconate Titanate (Pzt) Thin Films
Additionally two patterning methods, traditional chemical wet-etching and a novel soft lithographic technique, are explored as a means to reduce residual stress within film features. For the soft lithographic technique, film features are created by selective film cracking, a result of poor …
-
Thermal processing and the evolution of composition, structure and properties for sol-gel derived lead zirconate titanate thin layers
Research is reported for the relationships that exist between processing, composition and structure development, and properties, for sol-gel derived $\rm Pb(Zr\sb{0.53}Ti\sb{0.47})O\sb3$ (PZT) thin layers. Emphasis was placed on the effect of thermal processing conditions on the gel-to-ceramic …
-
Preparation and characterization of doped lead zirconate titanate Pb(Zr<sub>x</sub>Ti<sub>1-x</sub>)O₃ films
… making the undoped PZT films were derived from lead acetate, zirconium n-propoxide, and titanium iso-propoxide. In addition, lanthanum acetylacetonate, neodymium acetate, and niobium ethoxide were introduced into the precursor solution to accomplish doping of the corresponding elements. Both …
-
Substrate Dependence on the Growth and Texture of Lead Titanate and Lead Zirconate Titanate Thin Films by Metal Organic Chemical Vapor Deposition
Substrates employed for PT and PZT film growth in this study can be categorized as the single crystalline substrates, polycrystalline substrates, and the amorphous substrates. The PT films grown on the single crystal oxide substrates (MgO(100) and LaAlO$\sb3$(100)) are single crystalline and …
-
Responsive temperature and pressure sensor design for in-situ prosthesis monitoring applications based on the piezoelectric and pyroelectric effects in lead zirconate titanate
… pyroelectric effect present in ferroelectric lead zirconate titanate {cedil}{9D}{91}{83}{cedil}{9D}{91}{8F}{cedil}{9D}{91}{joiner}{cedil}{9D}{91}{9F}{cedil}{9D}{91}{AElig}({cedil}{9D}{91}{87}{cedil}{9D}{91}{96}(1{acute}{88}{92}{cedil}{9D}{91}{AElig}){cedil}{9D}{91}{82}3) (PZT) and has several …
-
Evolution of local structure and stress development during thermal treatment of sol-gel-derived PZT-based thin layers
… for sol-gel derived precursors in the lead zirconate titanate (PZT) system as a function of heat treatment conditions.
-
An electromechanical system for characterization of piezoelectric materials
… materials, Polyvinylidene Fluoride (PVDF) and Lead Zirconate Titanate (PZT), are used as samples in this project to demonstrate the device operation. In addition, a non-piezoelectric material is included as a control group.
-
Investigating Ferroelastic and Piezoelectric Vibration Damping Behavior in Nickel-Barium Titanate and Nickel-PZT Composites
… and piezoelectric ceramics such as barium titanate (BaTiO3) and lead zirconate titanate (PZT) is due to the anelastic response of ferroelastic domain walls to applied external stress. In piezoelectric ceramics, vibration energy can also be dissipated through the direct piezoelectric effect …
-
Self-powered wireless sensor system using MEMS piezoelectric micro power generator (PMPG)
A thin-film lead zirconate titanate, Pb(Zr,Ti)03, MEMS Piezoelectric Micro Power Generator (PMPG) has been integrated with a commercial wireless sensor node (Telos), to demonstrate a self-powered RF temperature sensor module. PMPG and a power management module are designed to satisfy sensor node's …
Page 1 of 3