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 51 for “"Ferroelectric properties"”.
-
Doped HfO2 thin films: Engineering and Origins of its ferroelectric properties
… One of those physical phenomena of interest is ferroelectricity, capitalising on reversibly switchable polarisation with application of electric field. Especially, with the discovery of ferroelectricity in scalable and CMOS-compatible HfO2 thin film in which its polarisation amplifies with …
-
Dielectric and Ferroelectric Properties of Lead Lanthanum Zirconate Titanate Thin Films for Capacitive Energy Storage
… The research mainly focuses on dielectric and ferroelectric properties of lead lanthanum zirconate titanate or Pb<sub>1-x</sub>La<sub>x</sub>(Zr<sub>y</sub>Ti<sub>1-y</sub>)O<sub>3</sub> (PLZT, x/y/1-y) relaxor thin films deposited on silicon (Si) and nickel (Ni) substrates in a range of …
-
Bismuth-, Tin-, and Lead-Containing Metal-Organic Materials: Synthesis, Structure, Photoluminescence, Second Harmonic Generation, and Ferroelectric Properties
… periodicities that can exhibit a variety of properties resulting from the presence of the metal moieties and/or ligand connectors in the structure. To date, MOMs with a range of functional attributes have been prepared, including record-breaking porosity, catalytic properties, molecular …
-
Synthesis and Characterization of Ferroelectric (1-x)SrBi2Ta2O9-xBi3TaTiO9 thin films for Non-volatile memory Applications
… deposition technique showed much improved properties compared to SrBi2Ta2O9: a leading candidate material for memory applications. A pyrochlore free crystalline phase was obtained at a low annealing temperature of 600 oC and grain size was found to be considerably increased for the …
-
Investigating the Thermal Stability and Cation Ordering in Layered Cathode LixMO2 (x ≤ 1; M = Co, Mn, Ni) Materials for Li-ion Rechargeable Batteries and Studying the Ferroelectric Properties of LiNbO3 Nanoparticles
… battery, and LiNbO3, has wide application in ferroelectric devices such as electronics, non-volatile memories, and thin film capacitors. LiMO2 was synthesized and characterized to understand the correlation between capacity fading and thermal stability relating to the microstructures. Our …
-
Evolution of structure and electrical properties during crystallization of rapidly solidified bismuth(4)titanium(3)oxygen(12)
… heat treatment were investigated. Dielectric and ferroelectric properties were related to microstructure.
-
Dielectric and pyroelectric susceptibilities of epitaxial ferroelectric thin films
The dielectric and pyroelectric properties of ferroelectrics have been utilized extensively in a variety of applications such as memories, transducers, and sensors. Traditionally, such applications have utilized bulk or single crystal versions of ferroelectrics but modern electronic devices …
-
Ferroelectric Thin Films for High Density Non-volatile Memories
Ferroelectric random access memories (FRAM) are considered as future memories due to high speed, low cost, low power, excellent radiation hardness, nonvolatility, and good compatibility with the existing integrated circuit (IC) technology. The non-volatile FRAM devices are divided into two …
-
The synthesis and properties of liquid crystals with bulky terminal groups for bookshelf geometry ferroelectric mixtures
… a significant effect upon their mesomorphism and ferroelectric properties. Most of the research in liquid crystal for display applications concentrates on the design and synthesis of novel mesogenic cores to which straight terminal alkyl or alkoxy chains are attached. However, little is known …
-
Phase development and texture for lead-based perovskite thin layers prepared by sol-gel processing
… perovskite thin layers. Dielectric and ferroelectric properties were examined in terms of crystal structure, microstructure, and preferred orientation. Ferroelectric La-modified Pb(Zr,Ti)O$\sb3$ (PLZT) and antiferroelectric PbZrO$\sb3$ (PZ) were chosen as materials which could be …
-
Deposition and characterisation of bismuth layer-structured ferroelectric films
Bismuth layer-structured ferroelectrics have been recognised as promising film materials for ferroelectric random access memory application due to their excellent fatigue resistance and other electrical properties. This work deals with the deposition and characterisation of epitaxial and …
-
Degradation in lead zirconate titanate thin film capacitors for non-volatile memory applications
A study of 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 …
-
Structure and properties interrelationships of SrBi₂(Ta<sub>1-x</sub>Nb<sub>x</sub>)₂O₉
In recent years, the ferroelectric oxides belonging to the family of layered perovskite, e.g., SrBi₂(Ta₁₋<sub>x</sub>Nb<sub>x</sub>)₂O₉ (or SBTN), were identified as promising candidates for nonvolatile memory applications. SrBi₂Ta₂O₉ (or SBT) thin films were found to exhibit no fatigue up to 10¹² …
-
Synthesis and Characterization of Ferroelectric Nanomaterials
… hydrothermal and citrate-gel methods. The ferroelectric properties of the prepared cosubstituted Bi4Ti3O12 ceramics were studied using P–E hysteresis loop, leakage, and polarization fatigue measurements. A two-phase solvothermal synthesis approach for the preparation of hydrophobic BaTiO3 …
-
Fabrication And Damping Behavior Of Particulate BaTiO3 Ceramic Reinforced Copper Matrix Composites
… metals, copper was reinforced with tetragonal ferroelectric BaTiO3 particulates (Cu-BaTiO3 composites) using powder metallurgy techniques. The effect of particulate size and three processing conditions, sintering atmosphere, cooling rate and, uniaxial compaction pressure on the tetragonality …
-
Sol-gel processing, perovskite phase development and properties of relaxor-based thin layer ferroelectrics
This thesis reports on the preparation and properties of thin layer ceramics in the Pb ((Zn$\sb{1/3}$Nb$\sb{2/3})\sb{\rm 1-x}$Ti$\sb{\rm x}$) O$\sb3$ (PZNT) and Pb ((Mg$\sb{1/3}$Nb$\sb{2/3})\sb{\rm 1-x}$Ti$\sb{\rm x}$) O$\sb3$ (PMNT) systems for capacitor and ferroelectric applications. Sol-gel …
-
Effect of nonstoichiometry on the magnetism and ferroelectricity of Fe- and Co-substituted strontium titanate thin films
… magnetoelectric materials, in which the magnetic properties can be controlled via electric field and vice versa, hold the potential to be useful in several emerging memory technologies, including spin-wave devices and multi-state memory. Room temperature ferromagnetism and ferroelectricity are of …
-
Sintering kinetics and properties of highly pure lead zirconate titanate ceramics
… 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, investigations on the effects of impurities from the raw materials on the …
-
High-throughput synthesis of functional oxide films
… since it provides a way to obtain desired novel properties for the applications such as electronics and energy. However, earlier epitaxy research's have been restricted because of the limited range of compositions and low-index of commercially available single crystal substrates. Consequently, …
-
Two phase magnetoelectric epitaxial composite thin films
… interaction between the piezoelectricity of the ferroelectric phase and the magnetostriction of the ferromagnetic phase, said multiferroic composites are capable of producing relatively large ME coefficients. This Dissertation focused on the deposition and characterization of two-phase composite …
Page 1 of 3