Effect of spark plasma sintering temperature on the phase equilibria and dielectric properties of BaTi2O5 ceramics

Nanocrystalline BaTi2O5 dielectric ceramic prepared by full crystallization from containerless solidified glass

“…A number of nanocrystalline ceramics have been fabricated by using spark plasma sintering (SPS) [7,8], two-step sintering [9,10], microwave sintering [11], ultra-high pressure sintering [12], and so on [13,14]. SPS is used as a good method of preparing ceramics with pure phase because of short duration within sintering process [15]. Two-step sintering has a short high temperature sintering followed by a long low temperature treatment to frozen the grain boundary migration, which can obtain nanocrystalline ceramics [10].…”

“…The single-crystalline BaTi 2 O 5 prepared by floating zone melting shows a high Curie temperature (T C = 430-475 ℃) and a high permittivity in b-direction without lead additives [19,20]. Hence, BaTi 2 O 5 ceramic is fabricated and studied as a promising environmentally friendly material [15,[21][22][23][24]. Polycrystalline BaTi 2 O 5 ceramic was prepared by laser rapid solidification method [22].…”

“…Polycrystalline BaTi 2 O 5 ceramic was prepared by laser rapid solidification method [22]. Highly dense BaTi 2 O 5 ceramic was effectively fabricated by spark plasma sintering method [15]. Another synthetic approach for single-phase BaTi 2 O 5 ceramic is hot-pressing the arc-melting-derived needle-like powder [23].…”