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Powder samples of Bi 1−x Y x FeO 3 (BFO, x=0, 0.02, 0.05 and 0.1) were prepared by sol–gel method in this paper. The BFO is crystallized in rhombohedrally distorted perovskite structure with space group R3c. Y-doping generates structural evolution in BFO toward orthorhombic Pnma structure due to the adequate substitution of Bi 3+ . In 12–18GHz, both the dielectric constant...
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