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Filtering by: Decade 2010-2019 Subject Dielectric relaxation

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
Development of Temperature-Stable Relaxor Dielectrics for High Energy Density Capacitor Applications

Creator:

McCue, Connor

Abstract:

High performance dielectric materials are needed for high power SiC- or GaN-based electronics which combine the best features of high energy density, low dielectric loss and high reliability and for advanced high-speed and high-voltage energy storage where temperature stability plays an important role in material properties. An ideal capacitor for...

Resource Type:

Masters Thesis
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