Phase formation, microstructure and dielectric properties of Sr0.53Ba0.47Nb2−xTaxO6 ceramics

Investigation of the Characteristics of Barium Strontium Titanate (Bst) Dielectric Resonator Ceramic Loaded on Array Antennas

“…This is because the dielectric constant of ceramic also is dependent to a significant extent on grain size. It was reported that the dielectric constant increased as the initial grain size of the final ceramic increased [20]. In the present study, the variation in the values of the dielectric constant at different spots was attributed to differences in the grain size, as shown in the field emission scanning electron microscopy (FESEM) micrographs in Figures 1 and 2.…”

“…It was reported that the peak splits at (002) and (200) indicated the presence of the tetragonal phase, whereas the patterns are characteristic of a cubic phase when (002) was diminished [20].…”

Investigating the physical meanings of diffused phase transition models

“…1, the T c distribution curve becomes less steep and the diffused characteristics are more obvious when the value is smaller. Based on the experimental results, several researchers have found that both the and values potentially increase when the relaxor materials tend to exhibit more complete DPT behaviour [9][10][11][12][13][14][15][16][17][18][19]. These experimental results are contrary to our previous discussion of Eq.…”

“…The diffused phase transition (DPT) model is popularly used to describe the dielectric behaviour of relaxor ferroelectric (RFE) materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Smolensky hypothesized that different transition temperatures exist in different micro regions due to compositional fluctuation.…”

“…As mentioned before, researchers have frequently used both Eqs. (3) and (4) to discuss the dielectric diffused characteristics of RFE materials [9][10][11][12][13][14][15][16][17][18][19]. However, the fitting adaptability between Eqs.…”