Low temperature sintering and microwave dielectric properties of Bi4B2O9-added 0.25CaTiO3–0.75(Li1/2Nd1/2)TiO3 ceramics

Dielectric Characteristics of (Ca_0.2Sr_0.8)₃(Zr_xTi_1-x)₂O₇ Ceramics at Microwave Frequencies

“…3. A maximum Q×f value of 18,000 GHz was obtained for (Ca 0.2 Sr 0.8 ) 3 (Zr 0.06 Ti 0.94 ) 2 O 7 specimen sintered at 1520 o C/4 h. Intrinsic factor for the variation in the τ f value could be reasonably that the distortion of microstructure, crystal lattice, defect, and phase transition, which could be responsible for the variation in the τ f value [16]. Significant changes were observed in the τ f value with different x contents, which implies that the τ f value was sensitive to the x content.…”

Dielectric properties of CaTiO3 coatings prepared by plasma spraying

“…CaTiO 3 is often used in complex ceramic systems where its content governs the temperature dependence of relative permittivity or resonant frequency. [9][10][11][12][13][14][15] Sintered CaTiO 3 is a high permittivity linear dielectric 16 and at the time a material whose suitability for plasma spray processing was already demonstrated by the authors. 17,18 For the present set of experiments CaTiO 3 had been preferred compared to more complicated microstructures 17 of several 'ATiO 3 -type' dielectrics.…”

“…9 For example a non-stoichiometric composition of CaO-Li 2 O-RE 2 O 3 -TiO 2 (RE is rare earth) was mentioned as a temperature stable dielectric material. 10 CaTiO 3 doped with Nd 11 was used mainly for this reason, whereas CaTiO 3 doped with Pr 12 offers also interesting optical properties. CaTiO 3 also can host on the Ca-site Er 3z , Tm 3z or Yb 3z ions to exhibit luminescence properties under 976 nm diode excitation.…”

“…There exists a demand for linear dielectrics enabling to minimize a cross-coupling with conductors 9. For example a non-stoichiometric composition of CaO–Li 2 O–RE 2 O 3 –TiO 2 (RE is rare earth) was mentioned as a temperature stable dielectric material 10. CaTiO 3 doped with Nd11 was used mainly for this reason, whereas CaTiO 3 doped with Pr12 offers also interesting optical properties.…”

Microwave dielectric properties of CaV2O6 ceramics with low dielectric loss

“…Low melting point sintering aids are commonly used to lower the sintering temperature of microwave dielectric ceramics. However, at present reducing the sintering temperature without affecting the electrical performance is still a challenge [2]. Therefore, a recent trend in LTCC technology is the development of dielectric materials with favorable properties and intrinsic low sintering temperature to save energy.…”