Low temperature sintered Li6MgTiNb1-V O8F microwave dielectric ceramics with high-quality factor

The microwave dielectric properties of the low‐temperature firing BaZnP2O7 ceramics with Co2+ substitution

“…The Q × f of ceramics is affected by external and internal factors. Generally, the external factors are the second phases, density, grain size, and grain boundaries, while the internal factors are related to lattice vibrations 23 . In this work, the Raman spectroscopy was utilized to study the influence of internal factors on the properties of single‐phase ceramics with similar densities.…”

“…Generally, the external factors are the second phases, density, grain size, and grain boundaries, while the internal factors are related to lattice vibrations. 23 In this work, the Raman spectroscopy was utilized to study the influence of internal factors on the properties of singlephase ceramics with similar densities. The FWHM value of the Raman peak is related to the cation disorder and crystallinity, which determines the damping factor affecting the internal losses.…”

Ceramic compositions for 5G devices containing niobium: A survey

“…The substitution of V 5+ for Nb 5+ decreased the sintering temperature while improving the relative density and relative permittivity. The Li 6 MgTiNb 0.98 V 0.02 O 8 F composition sintered at 850 • C/4 h showed ε r = 18.14 ± 0.05, Qxf = 58 300 ± 1300 GHz, and τ f = −42.66 ± 0.33 ppm/ • C. 56 The composition with orthorhombic structure was sintered in the 1075−1175 • C range. This composition exhibited a partially ordered rock salt superstructure.…”

“…The substitution of V 5+ for Nb 5+ decreased the sintering temperature while improving the relative density and relative permittivity. The Li 6 MgTiNb 0.98 V 0.02 O 8 F composition sintered at 850°C/4 h showed ε r = 18.14 ± 0.05, Qxf = 58 300 ± 1300 GHz, and τ f = −42.66 ± 0.33 ppm/°C 56 …”

Microwave Dielectric Properties of Li3TiO3F Oxyfluorides Ceramics

“…For example, in 2019 the structure and microwave dielectric performances of novel Ti-containg oxyfluorides, such as Li 7 Ti 3 O 9 F and Li 5 Ti 2 O 6 F were first reported by Fang et al [10,11]. Subsequently, several binary, ternary, and multicomponent Nb-containing oxyfluorides with promising microwave dielectric performances, such as Li 5.5 Nb 1.5 O 6 F, Li 4 Mg 2 NbO 6 F, and Li 7 (Nb 1−x Ti x)2 O 8−x F, Li 6 MgTiNb 1−x V x O 8 F, have been reported by Liu et al [13][14][15]. In 2023, Zhang et al reported a new oxyfluoride dielectric ceramic system of Li 2+x ZrO 3 F x , among which the Li 3 ZrO 3 F ceramics simultaneously exhibited a near zero τ ƒ (1.2 ppm/ • C), a high Q × f (65,100 GHz), and a low firing temperature (925 • C) [16].…”