Phase evolution and microwave dielectric properties of ceramics with nominal composition Li_2x(Zn_0.95Co_0.05)_2−xSiO₄ for LTCC applications

Abstract

Phase evolution, microstructures and the optimal x value of ceramics with nominal composition Li2x(Zn0.95Co0.05)2−xSiO4 were investigated.

L attice V ibrational C haracteristics , Crystal Structure s , and D ielectric P roperties of Li Mn PO 4 Microwave Dielectric Ceramics as a Function of Sintering Temperature

“…Infrared reflectance spectroscopy and room-temperature Raman spectroscopy are used to study the lattice vibrations and intrinsic dielectric properties [17][18] . Based on the group theory analysis , theoretically, 81 optical vibrational modes exist for LMP ceramics with the Pmnb space group, whose specific information can be stated as follows: 15 = 11 + 10 + 7 1 + 13 1 + 11 2 + 9 2 + 7 3 + 13 3 (1)…”

Lattice vibrational characteristics, crystal structures, and dielectric properties of LiMnPO4 microwave dielectric ceramics as a function of sintering temperature

“…To save energy and reduce costs, the sintering temperatures of ceramics must be decreased to achieve better sintering characteristics; therefore, MWDCs with low inherent sintering temperatures have attracted attention. 1,[3][4][5][6] For lithium-transition metal phosphates LiRPO4 (R = Ni, Mn, Zn, Mg)-series ceramics, [7][8][9][10][11] different atoms at the R position affect the crystal structures and inherent properties of the materials. They are generally investigated as cathode materials for lithium-ion batteries and do not display microwave dielectric properties; But some scholars have studied the microwave dielectric properties of LiRPO4 -series ceramics by adjusting the sintering temperature, doping, substitution, and other methods.…”

Bond characteristics and microwave dielectric properties of high‐Q materials in li‐doped Zn3B2O6 systems

“…Thus, Li + substituted or Li + ‐containing compounds have been used as sintering aids to improve the sintering characteristics of ceramics. The influence that Li + has on microwave dielectric properties of ceramics is shown in Figure 1 6‐17 ; as seen, the addition of Li + not only reduces the sintering temperature and dielectric loss but also has no obvious effect on the dielectric constant, which does not change the application frequency range of the material.…”