Search Constraints

Start Over
Filtering by: Creator Brady, Kyle B. Remove constraint Creator: Brady, Kyle B. Advisor Cann, David P. Remove constraint Advisor: Cann, David P.

Search Results

  • The Conduction Properties of Heavily Acceptor Doped Lead Zirconate Titanate Ceramics

    Creator:
    Sangwan, Vyomika
    Abstract:
    Heavily acceptor doped Pb1.02Dx(Zr0.5Ti0.5)1-xO3 ceramics, where A is the dopant, were investigated in this research. Dopants studied included iron, magnesium and manganese at mole concentrations x ≤ 0.20. X-ray diffraction data along with scanning electron microscopy images revealed the solubility limits of these ceramics. All doped compositions exhibited a shift...
    Resource Type:
    Masters Thesis
    Full Text:
    research. To Sanu, Michael, Kyle, Jason, and Andreas, thank you for training me and answering my numerous

  • Designing Dielectric Materials through Complex Metal Oxides

    Creator:
    Nikkel, Jason W.
    Abstract:
    This dissertation demonstrated that the electrical properties of complex oxide-based perovskite materials could be controlled through the careful modification of both material composition and structure. This was first shown through the modification of lead zirconate titanate (Pb(Zr0.52Ti0.48)O3, PZT) solid solutions with bismuth indate (BiInO3, BI) where the relative stability of...
    Resource Type:
    Dissertation
    Full Text:
    Esteves, Chris Fancher, Ryan McQuade, Brienne Johnson, Michael Bowen, Sanu Gupta, Kyle Grove, Dylan Fast

  • Understanding of Ferroelectric to Relaxor Phenomenon in Bismuth-based Perovskite

    Creator:
    Gupta, Sanu K.
    Abstract:
    It has been well established that ferroelectric to relaxor crossover in piezoelectric ceramics exhibit promising electromechanical and dielectric properties over a wide temperature range, applying sensors and actuators transducers and such. A plethora of research has reported giant strain in various lead-free piezoelectric ceramics and attributed the reasoning to the...
    Resource Type:
    Dissertation
    Full Text:
    temperature, the final composition is often non- stoichiometric due to the loss of several A and B-site

  • Examination of Dielectric Properties of BaTiO3-SrTiO3 Based Systems

    Creator:
    Trobough, Nathaniel D.
    Abstract:
    This thesis examines the dielectric properties of two systems based on the perovskite materials barium titanate and strontium titanate. A solid solution was created starting with these base materials and then adding varying amounts of bismuth-zinc titanate and sodium niobate. These compositions were calcined and sintered at temperatures determined to...
    Resource Type:
    Honors College Thesis
    Full Text:
    _____________________________________________________________________ Brady Gibbons, Committee Member, representing Mechanical, Industrial & Manufacturing

  • The Local Structure of Functional Electroceramics

    Creator:
    Culbertson, Charles M.
    Abstract:
    This work investigates the relationship between the local structure and physical properties of a set of classical (MgTiO3, CaTiO3, SrTiO3, and BaTiO3) and complex ((1-x)Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3[BZT-BCT], Na0.5Bi0.5TiO3 [NBT]) perovskite electroceramics. The materials in this work were synthesized via standard solid state ceramic synthesis, the structure was investigated through a number of...
    Resource Type:
    Dissertation
    Full Text:
    Anderson, and Brady Gibbons, for their time, commitment, helpful feedback, and for their generosity over

  • Development of Temperature Stable Dielectric Materials Based on Lead Bismuth Perovskite Solid Solutions

    Creator:
    Colton, Zachary D.
    Abstract:
    High energy density ceramic capacitors with temperature stable permittivity across -150°C to 300°C are desired for a wide variety of electronic devices. Traditional dielectrics such as barium titanate provide a high permittivity but that permittivity is strongly temperature dependent over this specified temperature range. The goal of this work is...
    Resource Type:
    Masters Thesis
    Date Created:
    Full Text:
    material that has a high levels of B site cation disorder to take advantage of a relaxor dielectric

  • Defect Mechanisms in Bismuth-based Perovskites

    Creator:
    Kumar, Nitish
    Abstract:
    The aim of this research is to develop a fundamental understanding of the dominant defect species and the relevant defect equilibrium conditions for bismuth-containing perovskites to help guide the development of these materials for emerging applications. This is of paramount importance for many demanding applications, because ultimately the defect equilibria...
    Resource Type:
    Dissertation
    Full Text:
    composition 5%BMT-40%BKT-55%BNT was doped to incorporate acceptor and donor defects on the A and B sites by

  • Development of new high-temperature piezoelectric perovskite ceramics

    Creator:
    Ansell, Troy Youngmin
    Abstract:
    Lead zirconate titanate (PZT) is the dominant ferroelectric material in the market due to its excellent piezoelectric properties, relatively high Curie transition temperature (T[subscript C]), low cost, etc. However, because of emerging applications with requirements for high temperature (T[subscript C] > 400 °C) ferroelectrics, researchers are increasingly looking at alternative...
    Resource Type:
    Dissertation
    Full Text:
    helpful suggestions on compositional studies. I want to thank Dr. Brady Gibbons for keeping Dearborn Hall

  • Relaxor characteristic and phase evolution of complex perovskite barium titanate bismuth zinc titanate ceramics

    Creator:
    Triamnak, Narit
    Abstract:
    Relaxor characteristic of the solid solution (1-x)BaTiO₃-(x)Bi(Zn₁/₂Ti₁/₂)O₃ (BTBZT) was investigated in this research. X-ray diffraction technique and Raman spectroscopy revealed the crystal structure of BT-BZT at various compositions. For compositions with x ≤ 0.08, the solid solutions exhibited clear tetragonal symmetry and transitioned to pseudo-cubic symmetry as the content of...
    Resource Type:
    Dissertation
    Full Text:
    +. I would like to thank Dr. William H. Warnes and Dr. Brady J. Gibbons for providing generous

  • Development of complex perovskite dielectric ceramics for high temperature capacitor applications

    Creator:
    Raengthon, Natthaphon
    Abstract:
    Dielectric ceramics designed for capacitor applications for use in extreme environments, such as high temperatures, high voltages, or high-pressure environments, are in great demand. Existing capacitor technology fails to perform within these extreme conditions or such environments. The development of new dielectric ceramic materials for high temperature capacitor applications is...
    Resource Type:
    Dissertation
    Full Text:
    acknowledge, Dr. Brady J. Gibbons, Dr. P. Alex Greaney, Dr. John F. Conley, Dr. David Roundy, Dr. Ian M