Al/Nb co‐doped SrTiO₃ microwave ceramics with the composition of SrTi_1–x(Al_0.5Nb_0.5)_xO₃ (x = 0.03, 0.05, 0.1, and 0.15) have been synthesized via a standard solid‐state reaction method. The substitution of (Al_0.5Nb_0.5)⁴⁺ in B‐site inhibits the reduction in Ti⁴⁺ ions and the growth of grain size, then the transport of mobile charge carriers is limited, and thus the Q value is improved. For the SrTi_0.9(Al_0.5Nb_0.5)_0.1O₃ ceramics, in addition to their high dielectric constant (ε_r ~185), they exhibit correspondingly a high Qf value (~ 9077 GHz) at 2.9 GHz, making the microwave ceramics suitable for myriad device miniaturization and high‐performance wireless communication.

中文翻译：

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铝和铌共掺杂的SrTiO3微波陶瓷的高介电常数和高Q

通过标准固态反应方法合成了具有SrTi _{1– x}（Al _0.5 Nb _0.5）_x O ₃（x = 0.03、0.05、0.1和0.15）组成的Al / Nb共掺杂SrTiO ₃微波陶瓷。。B位中（Al _0.5 Nb _0.5）⁴⁺的取代抑制了Ti ⁴⁺离子的减少和晶粒尺寸的增长，从而限制了移动载流子的传输，从而提高了Q值。对于SrTi _0.9（Al _0.5 Nb _0.5）_0.1 O ₃陶瓷，除了它们的高介电常数（ε _{- [R}〜185），将它们在2.9 GHz的呈现相应较高的QF值（〜9077千兆赫），使得微波陶瓷适合于无数的设备小型化和高性能的无线通信。