Investigating the microwave dielectric properties of ceramics prepared through the conventional solid-state route, such as x[(Mg
0.6Zn
0.4)
0.95Co
0.05]
1.02TiO
3.02-(1−x)Ca
0.6(La
0.9Y
0.1)
0.2667TiO
3, reveals notable characteristics. [(Mg
0.6
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Investigating the microwave dielectric properties of ceramics prepared through the conventional solid-state route, such as x[(Mg
0.6Zn
0.4)
0.95Co
0.05]
1.02TiO
3.02-(1−x)Ca
0.6(La
0.9Y
0.1)
0.2667TiO
3, reveals notable characteristics. [(Mg
0.6Zn
0.4)
0.95Co
0.05]
1.02TiO
3.02 shows a permittivity (ε
r) of approximately 20, a high quality factor (
Q ×
f) ranging between 250,000 and 560,000 GHz, and a temperature coefficient of resonant frequency (τ
f) of approximately −65 ppm/°C. To enhance the temperature stability, Ca
0.6(La
0.9Y
0.1)
0.2667TiO
3 featuring a τ
f value of +374 ppm/°C was incorporated into the [(Mg
0.6Zn
0.4)
0.95Co
0.05]
1.02TiO
3.02 composition. τ
f demonstrated an increase with rising Ca
0.6(La
0.9Y
0.1)
0.2667TiO
3 content, reaching zero at x = 0.95. A ceramic composition of 0.95[(Mg
0.6Zn
0.4)
0.95Co
0.05]
1.02TiO
3.02-0.05Ca
0.6(La
0.9Y
0.1)
0.2667TiO
3, incorporating 3wt.% BaCu(B
2O
5) as sintering aids, exhibited outstanding microwave dielectric properties: ε
r~22.5, Q × f~195,000 (at 9 GHz), and τ
f~0.1ppm/°C, with a sintering temperature at 950 °C. This material is proposed as a prospective candidate for 6G band components and GPS antennas.
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