x(Mg0.7Zn0.3)0.95Co0.05TiO3-(1−x)(La0.5Na0.5)TiO3 ceramic at microwave frequency with a near zero temperature coefficient of resonant frequency

Dielectric Properties and Applications of Low‐Loss (1−x)(Mg0.95Ni0.05)2TiO4‐xSrTiO3 Ceramic System at Microwave Frequency

“…Research for new materials with such an optimum combination has been ongoing and reported in these few years. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] Microwave dielectric properties of binary titanate ceramic Mg 2 TiO 4 has a spinel-type structure, belonging to the cubic space group Fd-3m (2 2 7). It exhibits a high dielectric constant e r $ 14, a high-quality factor Q9f $ 150,000 (GHz), and a temperature coefficient of resonant frequency s f $ À50 ppm/°C.…”

Microwave Dielectric Properties of (1 − x)(Mg0.95Ni0.05)TiO3–x(Ca0.8Sr0.2)TiO3 Ceramic System With Near‐Zero Temperature Coefficient

“…In particular, size reduction is mainly a result from the use of high dielectric constant material as the wavelength (λ) in dielectrics is inversely proportional to according to the relation where λ o is the wavelength in vacuum. However, as the frequency of interest is extended from ISM (industrial, scientific, and medical) bands to millimeter wave range, materials with high dielectric constant tend to become a less of interest . Consequently, high quality factor together with low dielectric constant would play a more prominent role instead, as high quality factor can significantly reduce the dielectric loss, and low dielectric constant allows a fast time for electronic signal transition at ultra high frequencies.…”

Sinterability and microwave dielectric properties of nano structured 0.95MgTiO3–0.05CaTiO3 synthesised by top down and bottom up approaches

“…He has also studied the effect of ZnO and V 2 O 5 addition on the microwave dielectric properties of 0.85MgTiO 3 -0.15Ca 0.6 La 0.8/3 TiO 3 [12] and 0.8(Mg 0.95 Zn 0.05 )TiO 3 -0.2Ca 0.61 Nd 0.26 TiO 3 ceramics [13] respectively and observed the possibilities of tuning microwave dielectric properties by controlling the additive amount. Extensive studies have been carried out by Chen on modified MCT ceramics with modifications done by substituting different elements in the Mg, Ca and Ti sites of MCT systematically [13][14][15][16][17][18][19][20]. In the place of Mg in MgTiO 3, elements like Zn [14,15], Co [16], La [17,18] and Nd [19] were substituted.…”

“…Extensive studies have been carried out by Chen on modified MCT ceramics with modifications done by substituting different elements in the Mg, Ca and Ti sites of MCT systematically [13][14][15][16][17][18][19][20]. In the place of Mg in MgTiO 3, elements like Zn [14,15], Co [16], La [17,18] and Nd [19] were substituted. In the place of Ti too, substitution of Mg and Ti in 1:1 ratio was done [18,19] [16], Sr [14,18,19], Nd [20] and also with La-Na [15] and Nd-Na [17] in 1:1 ratios.…”

“…In the place of Mg in MgTiO 3, elements like Zn [14,15], Co [16], La [17,18] and Nd [19] were substituted. In the place of Ti too, substitution of Mg and Ti in 1:1 ratio was done [18,19] [16], Sr [14,18,19], Nd [20] and also with La-Na [15] and Nd-Na [17] in 1:1 ratios. All these substitutions gave sintering temperature in the range of 1150-1500 • C and microwave dielectric properties ε r ∼ 19-45 with maximum possible value of 132 [19], Q × f ∼ 9500-68,000 GHz and f ∼ 8.9 to −14.9 ppm/ • C [12,13].…”