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Abstract Inequivalent La3+ is firstly utilized to modify the microwave dielectric properties in SrTiO3 ceramic system. For the general composition of Sr1-xLa2x/3TiO3 (0 ≤ x ≤ 1), the effects of La3+ introduction on the… Click to show full abstract
Abstract Inequivalent La3+ is firstly utilized to modify the microwave dielectric properties in SrTiO3 ceramic system. For the general composition of Sr1-xLa2x/3TiO3 (0 ≤ x ≤ 1), the effects of La3+ introduction on the phase transition and structural changes are systematically investigated. The correlation between A-site ordering degree and dielectric loss in microwave range is established, and the temperature coefficient of resonant frequency is also dramatically improved. When x = 0.945, excellent dielectric properties of er ∼89.3, Qf ∼15243 GHz (@4.3 GHz) and τf ∼ 160 ppm/°C are obtained, making it potential to meet the application requirements of 5G technologies.
Journal Title: Materials Chemistry and Physics
Year Published: 2018
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