Abstract
ABSTRACTThe unique dielectric properties of CaCu3Ti4O12 (CCTO) are a promising feature for capacitor applications. Polycrystalline Ca0.95Nd0.05Cu3Ti3.95Zr0.05O12 ceramic was synthesized via conventional solid state method. XRD and Rietveld studies confirmed that crystal structure is cubic with space group Im3. Microstructural study by scanning electron microscopy (SEM) suggests that the compound has some abnormal grains embedded with small grains depict inhomogeneous microstructure. The dielectric properties were analyzed in frequency range from 100 Hz to 5 MHz at different temperatures. A giant dielectric constant (∼19,426) with minimal loss tangent (∼0.067 at 1 KHz) at room temperature is achieved in studied composition.
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