TY  - JOUR
TI  - Detailed structure analyses on Cobalt doped Pb$TiO_3$ powders
AB  - The identification of the defects and secondary phases which significantly affect the material properties are of crucial importance. In this study, a systematic structure examination of $PbTiO_3$ and cobalt doped $PbTiO_3$ powder ceramics was carried out. X-ray diffraction (XRD), Fourier-transform infrared (FT-IR), Raman, and electron paramagnetic resonance (EPR) spectroscopies were applied along with nonsimultaneous thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The doped and undoped $PbTiO_3$ materials were synthesized via a practical sol-gel route that takes place at 50 °C. The perovskite formation for both materials was verified. The dislocation density of cobalt doped $PbTiO_3$ was found to be 0.0121 $nm^{–2}$ while it was 0.00239 $nm^{–2}$ for the undoped material. Besides, a strong strain effect was observed for cobalt doped PbTiO3 via XRD. This was attributed to the $Co_3O_4$ phase which was detected through EPR and FT-IR analyses. The formation of the $Co_3O_4$ phase during synthesis revealed the previously unexpected nonimproved ferroelectric behavior for cobalt doped PbTiO3. The dielectric constant and the dielectric loss (tan δ) of cobalt doped $PbTiO_3$ were estimated as 1066 and 0.8370, respectively.
AU  - Erunal, Ebru
DO  - 10.55730/1300-0527.3425
PY  - 2022
JO  - Turkish Journal of Chemistry
VL  - 46
IS  - 4
SN  - 1300-0527
SP  - 1176
EP  - 1184
DB  - TRDizin
UR  - http://search/yayin/detay/1141998
ER  -