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Synthesis, characterization and dielectric properties of EuBa 2 SbO 6 nanocrystals
Author(s) -
Kavitha V. T.,
Vijayakumar C.,
Wariar P. R. S.,
Koshy J.
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000113
Subject(s) - raman spectroscopy , dielectric , scanning electron microscope , transmission electron microscopy , materials science , nanocrystal , sintering , analytical chemistry (journal) , perovskite (structure) , substrate (aquarium) , chemical engineering , nanotechnology , chemistry , crystallography , metallurgy , optics , organic chemistry , composite material , physics , oceanography , optoelectronics , engineering , geology
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. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)