Synthesis, characterization and dielectric properties of EuBa2SbO6 nanocrystals

✍ Scribed by V. T. Kavitha; C. Vijayakumar; P. R. S. Wariar; J. Koshy

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 159 KB
• Volume: 45
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.201000113

✦ Synopsis

Nanoparticles of EuBa 2 SbO 6 , a complex perovskite metal oxide were synthesized by a self-sustained combustion method employing citric acid as the complexing agent. The powders were characterized by X-ray diffraction, IR and Raman spectroscopy, transmission electron microscopy and scanning electron microscopy. Nanocrystals of EuBa 2 SbO 6 were sintered to 97 % of theoretical density at 1450 °C for 4 h without any sintering aid. The dielectric properties (dielectric constant, ε r and loss factor, tanδ) of the ceramics have been measured in the frequency range 50 Hz to 5 MHz at room temperature. The chemical non-reactivity of EuBa 2 SbO 6 with YBa 2 Cu 3 O 7-δ makes it an ideal substrate for YBa 2 Cu 3 O 7-δ superconductors.