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In this work, we have reported the dielectric properties and microstructure of the Mn doped CaCu3Ti4O12 (CCTO) ceramics. The conventional solid-state reaction was employed. By the partial Mn -for Ti substitution, the dielectric loss was suppressed remarkably while the dielectric constant (??r) still remains high. The sample CaCu3Ti3.76Mn0.24O12 exhibits a high ??r over 1200 and a low dielectric loss...
Lead zirconate titanate (PZT)–ordinary Portland cement (OPC) composites were fabricated using 40%, 50% and 60% of PZT by volume. The dielectric constants of the composites were found to be 139, 176 and 290 for composites containing 40%, 50% and 60% PZT respectively. Successful poling of the composites was achieved and the measured piezoelectric coefficient (d 33 ) of the composites increased...
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