Microwave dielectric properties and its compatibility with silver electrode of Li2MgTi3O8 ceramics

Fabrication of nanopowders by high energy ball milling and low temperature sintering of Mg2SiO4 microwave dielectrics

“…These applications demand microwave substrate materials with high quality factor (Q × f) to achieve high selectivity, low dielectric constant (ε r ) to reduce the delay time of electronic signal, and nearly zero temperature coefficient of resonant frequency ( f ) for frequency stability. Promising candidates include as Mg 2 SiO 4 (Q × f = 40,000-240,000 GHz, ε r = 6-7, f = −60 ppm/ • C) [1,2], Al 2 O 3 (Q × f = 680,000 GHz, ε r = 10, [3,19], Mg 2 SnO 4 (Q × f = 55,100 GHz, ε r = 8.41, f = −62 ppm/ • C) [11], Ba(Zn 1/3 Ta 2/3 )O 3 (Q × f = 120 THz) [23], Li 2 MgTi 3 O 8 (Q × f = 36,200 GHz, ε r = 26, f = −2 ppm/ • C) [24] and other microwave dielectrics materials [25][26][27][28][29][30][31][32][33]. Among these materials, forsterite Mg 2 SiO 4 has attracted a great attention with low dielectric constant and loss tangent.…”

Effect of H3BO3 on the low temperature sintering and microwave dielectric properties of Li2ZnTi3O8 ceramics

“…However, the reduction of sintering temperature of an original ceramic is usually accompanied by an abrupt degradation of the dielectric properties [3]. Therefore, there is a considerable interest in the search of new dielectric materials with low sintering temperature [7][8][9].…”

Low-temperature Sintering of Bi2O3-B2O3 Glass Doped Li2ZnTi3O8 - Li2TiO3 Ceramic and Its Dielectric Properties

“…Among these methods, low-melting temperature glass addition for liquid phase sintering is lower in cost and easier to handle than the other two. 6,7 Recently, many studies have been focused on the Li2O-MOx (A = Zn, Mg, Co)-TiO2 compounds. The Li2ZnTi3O8 material was first reported as a low loss dielectric for microwave applications by George and Sebastian.…”