Super-k CCTO is the newest electroceramic material with unusual dielectric properties ever found. CCTO means a ceramic compound of CaCu3Ti4O12 and Super-k was named after its shows a colossal dielectric constant with relative permittivity or k-value up to 12,000 (for comparison, k-value of air is ~ 1). This permittivity value is much higher if compared to the other electroceramic materials and remains relatively stable over a wide range temperature. The higher the dielectric constant, the more charge can store, and we can make the smaller electronic devices. Therefore, the Super-k CCTO is very useful for microelectronics and microwave devices applications such as to miniaturize memory devices (high-permittivity DRAM) as well as oscillators, filters, phase shifters and antennas.
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