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— Sr0.5Ba0.5Nb2O6 (SBN) relaxor ferroelectric films of different thicknesses have been grown on Pt(111)/Si(001) substrates by rf sputtering. We have studied their structure, composition–depth profiles, lattice dynamics, and dielectric properties at temperatures from 25 to 200°C. The results demonstrate that the composition of the films does not vary with depth and corresponds to that of the ceramic...
—We have synthesized needle- and platelike α-Bi2O3 and Bi2O2CO3 nanoparticles. The bulk density of the α-Bi2O3 and Bi2O2CO3 powders is 8.5 and 6.9 g/cm3. The dielectric permittivity of α-Bi2O3 and Bi2O2CO3 has been calculated using dielectric permittivity and dielectric loss tangent dispersion measurements in the frequency range from 2.5 × 101 to 1 × 106 Hz for 40% suspensions (0.05 and 0.08 volume...
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