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The influences of Ga 3+ doping ions on the microstructure, dielectric and electrical properties of CaCu 3 Ti 4 O 12 ceramics were investigated systematically. Addition of Ga 3+ ions can cause a great increase in the mean grain size of CaCu 3 Ti 4 O 12 ceramics. This is ascribed to the ability of Ga 3+ doping to enhance grain boundary...
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