Effect of glass additions on the sintering and microwave properties of composite dielectric ceramics based on BaO–Ln2O3–TiO2 (Ln=Nd, La)

Microstructures and microwave dielectric properties of (Ba1−xSrx)4(Sm0.4Nd0.6)28/3Ti18O54 solid solutions

“…Many attentions have been paid to improve the microwave dielectric properties by substitution of Ba 2+ and Nd 3+ ions using Sr 2+ and Y 3+ ions, as well as adding NdAlO 3 or Al 2 O 3 . As can be seen from Table 1, all of them find that the substitution of ions can significantly enhance Q × f and reduce f  [16][17][18][19].…”

Tuning dielectric properties in ceramics with anisotropic grain structure: The effect of sintering temperature on BaLa4Ti4O15

“…MW ceramics with high contribute to the miniaturization of devices, which include COG multilayer capacitors (thick films) and dielectric resonators, antennas and filters (bulk) [1][2][3][4][5]. Materials with > 40 and close to zero, such as CaTiO 3 14 (BNT) [6][7][8][9][10][11], have potential to be used as resonators or dielectric substrates for antennas either as bulk ceramics or thick films [12].…”

Low-temperature firing and microwave dielectric properties of Ba–Nd–Ti with composite doping Li–B–Si and Ba–Zn–B glasses

“…Wu et al [21] studied BaO-Nd 2 O 3 -TiO 2 ceramics doped with CuO-B 2 O 3 and achieved the sintering temperature to 925°C, obtaining ceramics with e r = 63, s f = 28 ppm/°C, Q 9 f = 5300 GHz. Zheng et al [22] In the previous studies [23,26], the Li-Nb-Ti ceramic doped with 5 wt% LBS glass could be well sintered at 850°C and exhibited excellent microwave dielectric properties of e r = 19.16, Q 9 f = 41413 GHz, and s f = -1.62 ppm/°C, and Ba-Nd-Ti ceramics with 3 wt% Li 2 O-B 2 O 3 -SiO 2 (LBS) additions showed excellent microwave dielectric properties when sintered at 975°C: e r = 65.99, Q 9 f = 4943 GHz, s f = 19 ppm/°C. Jhou et al [27] reported that BZB glass could be used for low temperature sintering of BaTi 4 O 9 ceramics at 925°C, with e r = 28-33, Q 9 f = 15000-20000 GHz.…”