A novel thermally stable low-firing LiMg4V3O12 ceramic: Sintering characteristic, crystal structure and microwave dielectric properties

Structural evolution, low-firing characteristic and microwave dielectric properties of magnesium and sodium vanadate ceramic

“…Tyutyunnik et al [20] reported that LiMg 4 V 3 O 12 exhibited a tetragonal structure with unit cell parameters of a = b = 6.86707(2) Å and c =18.9545(1) Å. In our previous work [21], LiMg 4 V 3 O 12 ceramic showed good microwave dielectric properties with ε r =10.7, Q×f =24,000GHz (at ~10GHz), and τ f =-11.7 ppm/•C. Na + exhibits an equal electrovalence and similar ionic radius to that of Li + , however, the dielectric properties at microwave frequency of NaMg 4 V 3 O 12 ceramic have never been studied.…”

Synthesis, low temperature co-firing, and microwave dielectric properties of two ceramics BiM2VO6 (M=Cu, Ca)

“…The decrease in the sintering temperature is a key problem for the application of the LTCC technology. Many reports show that V 2 O 5 , Bi 2 O 3 based oxides [4][5][6][7], such as NaCa 2 Mg 2 V 3 O 12 [8], LiMg 4 V 3 O 12 [9], have interesting low sintering temperatures because of the low melting temperatures of Bi 2 O 3 (825 1C), V 2 O 5 (690 1C).…”

A novel microwave dielectric ceramic of BaMgP2O7 with low εr

“…Advanced substrate materials for microwave integrated circuits require a low dielectric constant (ε r o10) to maximize the signal propagation speed, a high quality factor (Q Â f) to increase the frequency selectivity, and a near-zero temperature coefficient of resonance frequency (τ f ) to ensure the stability of the frequency against temperature changes [1][2][3][4]. At present, many low ε r ceramics such as Al 2 O 3 , AO-SiO 2 (A¼Ca, Mg, Zn), MTiO 3 (M¼Mg, Ca) have good microwave dielectric properties but high sintering temperatures, which is energy-consuming.…”