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

Preparation and characterization of (Co0:3Zn0:7)(Ti1–xSnx)Nb2O8microwave dielectric ceramics

“…For x = 0.10, it was found that τ f of the sample was much larger than that of pure ZnTiNb 2 O 8 phase (-52 ppm/°C) [9]. This was attributed to the appearance of Zn 0.17 Ti 0.5 Nb 0.33 O 2 secondary phase (+237 ppm/°C) [16] rather than that of ZnTiNb 2 O 8 [11]. From Fig.…”

The effect of titanium compounds addition on the microwave dielectric properties of the ZnO–Nb2O5 ceramics for LTCC

“…2a) and spot D (in Fig. 2c) [5][6][7]. But the ZnTiNb 2 O 8 ceramics with 3.0 wt% BaCu(B 2 O 5 ) has a large negative s f value of -64.9 ppm/°C [7].…”

“…Searching for the microwave dielectric materials with both stable temperature coefficient of resonant frequency (s f ) and higher quality factor is constantly needed in ceramic material research. In our previous study, many materials exhibited high quality factor, such as ZnNb 2 O 6 , ZnTiNb 2 O 8 , but a high negative s f around -50 ppm/°C could restrict their application [5][6][7].…”

Microstructure and microwave dielectric properties of low-temperature sinterable (1 − x)Ba3(VO4)2–xCaWO4 composite ceramics

“…To meet the requirement of microwave devices such as multilayer integrated circuits (MIC), wireless LAN, and intelligent transport systems [1][2][3], microwave dielectric ceramics with a low dielectric constant (e r ), a high quality factor (Q 9 f), and a near-zero temperature coefficient of resonant frequency (s f ) are strongly required. Moreover, the development of low-temperature cofired ceramic (LTCC) has been stimulated by the benefits from the fabrication of miniature multilayer devices [4]. For LTCC applications, the sintering temperature of dielectric ceramics must be lower than the melting points of the electrode metals, for example, 961°C for silver or 1,064°C for copper [4].…”

“…Moreover, the development of low-temperature cofired ceramic (LTCC) has been stimulated by the benefits from the fabrication of miniature multilayer devices [4]. For LTCC applications, the sintering temperature of dielectric ceramics must be lower than the melting points of the electrode metals, for example, 961°C for silver or 1,064°C for copper [4]. Therefore, the low temperature sintering is a critical requirement for commercial LTCC applications.…”