| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1618965 | Journal of Alloys and Compounds | 2010 | 5 Pages |
Short time spark plasma sintering at 1200 °C for 10 min and under a uniaxial pressure of 95 MPa followed by annealing at 1100 °C for 5 h is proposed for synthesis of high density (99%) Ba(Ti0.87Sn0.13)O3 ceramic. Starting powder of 450 nm was obtained by co-precipitation, while the average grain size in the sintered ceramic was of 580 nm. X-ray diffraction analysis of the as prepared Ba(Ti0.87Sn0.13)O3 samples indicated the presence of single phase BaTi0.87Sn0.13O3 developed in the BaTiO3 cubic structure. Samples have high relative dielectric constant of 5680 and low dissipation factor (tan δ = 0.009) at Curie temperature of 57 °C and 1 kHz, good tunability and ferroelectric properties. Remarkable is that these results are from some points of view different than for the conventionally processed samples with similar stoichiometry. Some ideas in this regard are presented and this suggests that SPS can be useful for expanded possibilities in the control of the properties.
