Influence of B2O3 additions and sintering temperature on microwave dielectric properties of La2.98/3Ba0.01(Mg0.5Sn0.5)O3 ceramics

A new temperature stable microwave dielectric ceramics: ZnTiNb2O8 sintered at low temperatures

“…And many researchers have developed several approaches to reduce the sintering temperature of the ceramics: (i) the usage of small particle sized starting materials synthesized by wet chemical methods such as the sol-gel and coprecipitation methods and (ii) the addition of low-melting glasses, oxide or mixed-oxide additives, such as ZnO-B 2 O 3 -SiO 2 (ZBS), Li 2 [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. For the first approach, chemical synthesis complicates the manufacturing and increases the production cost.…”

Improvement in microwave dielectric properties of La(Mg0.5Sn0.5)O3 ceramics by applying ZnO–B2O3–SiO2

“…These results demonstrated again that ZBS could reduce the sintering temperature. Figure 7 displays the s f of the ZBS-doped La(Mg 0.5-Sn 0.5 )O 3 ceramics, following sintering at 1,250-1,550°C for 4 h. Generally, s f is related to the composition, the amount of additive, and the second phases that are present in ceramics [14]. Since the composition of ZBS-doped La(Mg 0.5 Sn 0.5 )O 3 ceramics with fixed degrees of ZBS additive did not vary with sintering temperature over the entire ranges that were observed, the variation of s f with sintering temperature was insignificant.…”

Influence of Ca0.8Sr0.2TiO3 on the microstructures and microwave dielectric properties of Nd(Mg0.4Zn0.1Sn0.5)O3 ceramics

“…Many investigations of La(Mg 0.5 Sn 0.5 )O 3 ceramics and related ceramic systems have investigated their potential application in resonators, filters and antennas in modern communication systems, such as radar and wireless local area network (WLAN), which are operated at microwave frequencies. A dielectric constant of 15.6 and a Q 9 f of 30,600 GHz were obtained for La(Mg 0.5 Sn 0.5 )O 3 ceramics that were sintered at 1,500°C for 4 h [8]. Since the ionic radius of Nd 3?…”

“…Ca 0. 8 The fine powders obtained were then axially pressed at 2,000 kg/cm 2 into pellets with a diameter of 11 mm and a thickness of 6 mm, prior to sintering. The specimens obtained were then sintered at 1,550 and 1,600°C in air for 4 h. Both the heating rate and cooling rate were set at 10°C/ min.…”