This paper explores the behavior of dielectric resonators with Mie modes under cryogenic conditions, focusing on ceramic materials that exhibit high permittivity, low loss, and stable performance at temperatures down to 7K. Employing a coplanar microstrip board in a cryostation environment, the measurements reveal that MgTiO3+CaTiO3 undergoes significant resonant frequency shifts and diminished Q-factors, coupled with notable hysteresis during cooling and warming cycles. In contrast, ZrTiO4+SnTiO4 maintains thermal stability, with only minor shifts in resonant frequency and an enhancement of the Q-factor from 80 to 297 at low temperatures. This improved electromagnetic performance under cryogenic conditions suggests a strong potential for quantum applications, particularly in sensing, where consistent and high-quality resonances are critical for accurate detection. The findings underscore the promise of leveraging Mie resonances within robust dielectric materials to achieve reliable, low-loss, and highly sensitive microwave components for advanced quantum sensing technologies.
