Low temperature firing of BiSbO4 microwave dielectric ceramic with B2O3–CuO addition

Microwave Dielectric Properties of Low‐Firing Li2MO3 (M=Ti, Zr, Sn) Ceramics with B2O3–CuO Addition

“…Pure Li 2 TiO 3 ceramics cannot be well densified below 1000°C and at high temperature the volatilization of Li becomes serious. Liang and Lu 9 successfully used ZnO–B 2 O 3 frit to lower the sintering temperature to around 900°C, and the good microwave dielectric properties with an ɛ r of ∼23.06, a Q × f of ∼32 275 GHz, a TCF of ∼+35.79 ppm/°C were obtained for 2.5 wt% ZnO–B 2 O 3 frit‐doped Li 2 TiO 3 ceramics sintered at 900°C for 2 h. The B 2 O 3 –CuO was usually used to lower the sintering temperature of microwave dielectric ceramics and it works well in the Ba(Mg 1/3 Nb 2/3 )O 3 , Ba(Zn 1/3 Nb 2/3 )O 3 , and BiSbO 4 systems 10–12 . In the present work, the influence of B 2 O 3 –CuO addition on the sintering behaviors, phase compositions and microwave dielectric properties of Li 2 MO 3 (M=Ti, Zr, Sn) ceramics were studied.…”

“…[1][2][3][4][5][6] The Li 2 TiO 3 and its modification ceramics have attracted much attention because of its good microwave dielectric properties (relative permittivity e r 5 22-24, Q Â f value 5 40 000-70 000 GHz, TCF 5 120 ppm/1C). 7 [10][11][12] In the present work, the influence of B 2 O 3 -CuO addition on the sintering behaviors, phase compositions and microwave dielectric properties of Li 2 MO 3 (M 5 Ti, Zr, Sn) ceramics were studied. To apply this system in the LTCC technology, the chemical compatibility between Li 2 MO 3 (M 5 Ti, Zr, Sn) ceramics and silver was also studied.…”

Crystal structure and enhanced microwave dielectric properties of Ta5+ substituted Li3Mg2NbO6 ceramics

“…dielectric properties remains a central tenant of materials research and design efforts for microwave engineering applications. [11][12][13][14][15] In order to obtain the desired dielectric materials, a theory relating structure and microwave dielectric properties has been proposed. 12,[16][17][18][19] Recently, ceramic materials containing lithium having a rock-salt structure possess unique potential for practical applications due to suitable microwave dielectric properties.…”

“…Instead, materials with high dielectric loss or large temperature coefficients of resonance frequency are quite common. Therefore, how to improve the dielectric properties remains a central tenant of materials research and design efforts for microwave engineering applications . In order to obtain the desired dielectric materials, a theory relating structure and microwave dielectric properties has been proposed …”

Effects of La2O3-B2O3-ZnO additions on the low temperature sintering and microwave dielectric properties of (Ca0.61La0.26) TiO3ceramics

“…High relative permittivities are necessary since the size of the dielectric device is inversely proportional to the square root of the dielectric constant ε r . While the result should not be achieved with the decrease of the quality factor (Q × f), where Q ~ 1/ tanδ (tanδ is the dielectric loss tangent and f is the resonant frequency) [4][5][6][7][8].…”