Singh, Jitendra Pal Gautam, Sanjeev Kumar, Parmod Tripathi, Ambuj Chen, Jin-Ming Chae, Keun Hwa Asokan, K. 2024-01-20T11:32:29Z 2024-01-20T11:32:29Z 2021-09-05 2013-09-25 0925-8388 https://pubs.kist.re.kr/handle/201004/127656 Copper-doped calcium titanate (CuxCa1-xTiO3, x = 0.0, 0.01, 0.02 and 0.03) ceramic system was synthesized using solid state reaction method. X-ray diffraction and Raman spectroscopic studies reveal the presence of Pbnm space group in the samples. The particle size estimated from scanning electron micrograph changes from 235 nm to 6.5 mu m with copper doping, however crystallite size remain almost constant within experimental error. The dielectric study performed on these samples indicates an increase in the value of dielectric constant with Cu doping. The drastic change in the value of dielectric constant of the samples has been attributed to the change in microstructure. Local electronic structure deduced from X-ray absorption near edge structure reveals no distortion at TiO6 octahedra and reduction in O(2p) and Ca(4sp) hybridized states with increase of Cu2+ doping. (C) 2013 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA X-RAY-ABSORPTION ZINC FERRITE CATIO3 SPECTROSCOPY PEROVSKITE BEHAVIOR OXIDES ELNES RAMAN Correlation between the dielectric properties and local electronic structure of copper doped calcium titanate Article 10.1016/j.jallcom.2013.03.070 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.572, pp.84 - 89 JOURNAL OF ALLOYS AND COMPOUNDS 572 84 89 scie scopus 000319209600015 2-s2.0-84878116068 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article X-RAY-ABSORPTION ZINC FERRITE CATIO3 SPECTROSCOPY PEROVSKITE BEHAVIOR OXIDES ELNES RAMAN Ceramic Solid state reactions Dielectric constant X-ray absorption near edge structure