Synthesis And Characterization Of Cacu3ti40.2electro Ceramic With Cobalt Additives

Calcium copper titanium oxide (CCTO)wh. h material produced by the solid-state method, possesses higich p iatn,v tdyvianntcheed dielectric property. However, the d f ielectric loss o this material is also too high and cannot be commercialized in the industry. Therefore, in this writing, the method of CCTO preparation and cobalt addition is expected and seen to be able to improve the dielectric properties in CCTO. This CCTO material is prepared using the solid-state method; the mixture between calcium carbonate (CaCO3), copper oxide (Cu0), and titanium dioxide (TiO2) is done by ball milling. The resulting mixture is then through a process of calcination (900 ° C, 12 hours), and after that, the cobalt is mixed according to the composition set and dried and formed using a mold. After that, it is again baked for the sintering process (1040 ° C, 10 hours). The characterization process to examine the physical properties such as XRD, SEM, and density testing is accomplished according to the prescribed procedure. Meanwhile, dielectric measurement was done using an LCR meter by looking at the dielectric change at different frequencies temperatures, and voltage. The LCR meter shows the dielectric change varies according to the cobalt content. The cobalt content in the CCTO makes the permittivity change from a frequency of 0.012 kHz to l 100kHz. In addition, the cobalt content also influences 11,1e dieectric rate with changes in temperature and voltage. The physical properties t at were exposed from the XRD and SEM observations together with dens ofbal ity testing show that the change of grain and composition are influenced by t h e rate cot content. The correct amount of cobalt contains (0.08 mol%) improved thhe to diebecolectrmicmpreorpciviizeesdin CCTO. However, the reduction of dielectric loss was not enoug
obalt addition Keywords: CCTO, dielectric properks, cobalt addition