Effects of BaCu(B2O5) addition on phase transition, sintering temperature and microwave properties of Ba4LiTa3O12 ceramics

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

“…It is well known that BaCu(B 2 O 5 ) (BCB) decreases the sintering temperature of many materials, such as Li 2 3 . These materials showed good microwave dielectric properties [24][25][26][27][28].…”

Optical and physical properties of Ba4LiTa3O12 dielectric thin films by a sol–gel method

“…1 illustrates the XRD patterns of Ba 4 LiTa 3 O 12 thin films deposited with various annealing temperatures. As the annealing temperature was increased, the intensities of the Ba 4 LiTa 3 O 12 peaks (031), (110), and (300) were relatively increased with the others due to higher orientation [3]. With increasing annealing temperature at the growing film surface, the kinetic energies and mobilities of the atoms also increased [5][6][7].…”

“…High permittivity dielectric films with low leakage current and high transmittance value are important for a variety of integrated devices, such as metal-insulator-metal (MIM) capacitors and optoelectronic devices [1,2]. The twinned 8H hexagonal perovskite Ba 4 LiTa 3 O 12 ceramic plays an important role in the microwave communication component because of its excellent dielectric properties [3]. With the sintering temperature of 1450 1C, Ba 4 LiTa 3 O 12 has a dielectric constant of 28 and a high Q Â f value of 104,000 (GHz).…”

“…With the sintering temperature of 1450 1C, Ba 4 LiTa 3 O 12 has a dielectric constant of 28 and a high Q Â f value of 104,000 (GHz). Furthermore, the temperature coefficient of resonant frequency can be adjusted to 25 ppm/1C [3].…”

Low-temperature sintered Zn2SiO4–CaTiO3 ceramics with near-zero temperature coefficient of resonant frequency

“…Low-temperature co-fired ceramics (LTCC) have been widely investigated as a means of miniaturizing microwave devices. For practical application in microwave dielectric materials as substrates or patch antennas in LTCC, the materials must display low permittivity, high quality factor (Q × f), a near zero temperature coefficient of resonant frequency ( f ∼ 0 ppm/ • C) and a low-firing temperature (<961 • C, the melting temperature of Ag electrode) [1][2][3][4][5][6][7][8]. Most commercial LTCC materials have relative permittivity less than 10 and the lowest loss tangent values close to 0.0002 at microwave frequencies.…”