title: Microwave assisted synthesis and characterization of barium titanate nanoparticles for multi layered ceramic capacitor applications.
abstract: Barium titanate is a common ferroelectric electro-ceramic material having high dielectric constant, with photorefractive effect and piezoelectric properties. In this research work, nano-scale barium titanate powders were synthesized by microwave assisted mechano-chemical route. Suitable precursors were ball milled for 20 hours. TGA studies were performed to study the thermal stability of the powders. The powders were characterized by XRD, SEM and EDX Analysis. Microwave and Conventional heating were performed at 1000 degrees C. The overall heating schedule was reduced by 8 hours in microwave heating thereby reducing the energy and time requirement. The nano-scale, impurity-free and defect-free microstructure was clearly evident from the SEM micrograph and EDX patterns. LCR meter was used to measure the dielectric constant and dielectric loss values at various frequencies. Microwave heated powders showed superior dielectric constant value with low dielectric loss which is highly essential for the fabrication of Multi Layered Ceramic Capacitors.
authors.affiliation: Department of Ceramic Technology, Alagappa College of Technology Campus, Anna University, Chennai-600025, India. tsrajan1991@gmail.com
authors.forename: Sundararajan
authors.initials: S
authors.lastname: Thirumalai
authors.affiliation: Department of Mechanical Engineering, College of Engineering Guindy Campus, Anna University, Chennai-600025, India.
authors.forename: Balasivanandha Prabu
authors.initials: BP
authors.lastname: Shanmugavel
mesh_terms: D017609:Barium Compounds / Q000737:chemistry* / Q000528:radiation effects; D025802:Electric Capacitance; D004581:Electronics / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006361:Heating / Q000379:methods*; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000528:radiation effects; D008872:Microwaves; D036103:Nanotechnology / Q000295:instrumentation; D010316:Particle Size; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D017609:Barium Compounds; C024547:barium titanate(IV); D014025:Titanium