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Title: Structural and dielectric properties of CuO-doped SrTiO{sub 3} ceramics

Copper-doped SrTiO{sub 3} (ST) ceramic powders were processed by solid-state route diffusion (SRD) bulk preparation technique. We reported the effect of Cu{sup +2} ions on the dielectric response of ST and it established the substantial increase in dielectric constant (ε{sub r}) than undoped ST from 303K-673K and low loss (tanδ) for good dielectric applications. In respect of the electrical properties ac- activation energies were computed of range 0.089-0.319eV using lnσ Vs 1/T plots. The microstructure was examined with grain sizes 6-9µm of uniform distribution by field emission scanning electron microscope (FESEM). Some additional phases SrCu{sub 3}Ti{sub 4}O{sub 12} and TiO{sub 2} rutiles were detected by X-ray diffraction technique.
Authors:
; ; ; ;  [1]
  1. Materials Science Lab, Department of Physics, S K University, Anantapur – 515003, A. P (India)
Publication Date:
OSTI Identifier:
22490206
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACTIVATION ENERGY; CERAMICS; COPPER; COPPER IONS; COPPER OXIDES; DIELECTRIC MATERIALS; DIFFUSION; DOPED MATERIALS; FIELD EMISSION; GRAIN SIZE; PERMITTIVITY; POWDERS; RUTILE; SCANNING ELECTRON MICROSCOPY; STRONTIUM TITANATES; TITANIUM OXIDES; X-RAY DIFFRACTION