Influence of ER doping on the microstructural and dielectric properties of microwave sintered calcium copper titanate

• Main Authors: Jesurani, Sinnappan, Kanagesan, Samikannu, Hashim, Mansor, Ismail, Ismayadi, Abdullah, Nor Hapishah
• Format: Article
• Language: English
• Published: Scholars Research Library 2014
• Online Access: http://psasir.upm.edu.my/id/eprint/52137/1/Influence%20of%20ER%20doping%20on%20the%20microstructural%20and%20dielectric%20properties%20of%20microwave%20sintered%20calcium%20copper%20titanate.pdf; http://psasir.upm.edu.my/id/eprint/52137/; http://www.derpharmachemica.com/abstract/influence-of-er-doping-on-the-microstructural-and-dielectric-properties-of-microwave-sintered-calcium-copper-titanate-1773.html

The present work reports synthesis, as well as a detailed characterization of structural, morphological and dielectric properties of Er doped CaCu3Ti4-xErxO12 (CCTEO) with x = 0.00, 0.02, 0.10, 0.20 and 0.50 mol% ceramics were prepared by sol-gel route. The prepared samples were sintered by using microwave sintering. The phase composition and microstructure were studied by means of X-ray diffraction (XRD) and high resolution scanning electron microscopy (HRSEM). The crystal structure did not change on doping with erbium; and it remained cubic when all the six compositions were studied. At lower frequencies, it was found that the dielectric constants had a maximum value at 0.5 mol% of Er. This result indicates that a certain amount of Er dopant can be improve the dielectric properties of CaCu3Ti4O12.