Saravanan R. Titanate Based Ceramic Dielectric Materials

Millersville, USA: MRF LLC, 2018. — 167 p. — (Materials Research Forum 25). — ISBN10: 1945291540.Barium titanate is one of the most important electronic materials; due to its high permittivity, low dielectric loss and high tunability. The environment friendly material is suitable for microphones and microwave device applications such as tunable capacitors, delay lines, filters, resonators and phase shifters.
Doped titanates are extensively used for various electronic devices, such as transducers, piezoelectric actuators, passive memory storage devices, dynamic random access memory (DRAM), multilayer ceramic capacitors (MLCCs), positive temperature coefficient resistors (PTCR), optoelectronic devices and infrared sensors.
The book presents research results concerning the electron density distribution in a number of doped barium titanate ceramic materials using experimental X-ray diffraction data, UV-visible spectrophotometry (UV-vis), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The analysis of interatomic bonding and electron density distribution is important for predicting the properties of potentially important materials and has previously been lacking for the materials studied.Objectives
Importance of barium titanate (BaTiO3)
Crystal structure of barium titanate (BaTiO3)
Doped barium titanate
Applications of doped BaTiO3
Preparation of titanates
Solid state reaction technique
Preparation of doped titanates
Characterization methods
Instruments used for characterization studies
Methodologies used
ResultsStructural characterization – Powder X-ray diffraction
Optical characterization – UV -visible absorption spectra
Morphological characterization - SEM
Elemental confirmation - EDS
Charge density distribution – maximum entropy method
Analysis of ResultsSample preparation
Structutal analysis of doped titanates
Grain size analysis of doped titanates
Optical analysis of doped titanates
Morphological analysis of doped titanates
Elemental analysis of doped titanates