Dielectric properties of opal-based nanocomposites with particles of oxides and other vanadium compounds are studied. Microwave measurements are carried out in two frequency ranges: from 26 to 38 GHz and from 53 to 78 GHz. The frequency dependences of transmission and reflection coefficients have been measured for a plate of the nanocomposite and the results have been compared to the theoretical approximation of these dependences. The microwave complex dielectric permittivity has been retrieved from these coefficients. Magnetic field dependences of the transmission and reflection coefficients are measured, and it has been established that these dependences involve some characteristic features caused by ferromagnetic resonance and antiresonance.

中文翻译：

---

含钒氧化物纳米复合材料的毫米波介电常数

研究了具有氧化物和其他钒化合物颗粒的蛋白石基纳米复合材料的介电性能。微波测量在两个频率范围内进行：26 至 38 GHz 和 53 至 78 GHz。已经测量了一块纳米复合材料的透射系数和反射系数的频率相关性，并将结果与​​这些相关性的理论近似值进行了比较。已从这些系数中检索出微波复介电常数。测量了透射系数和反射系数的磁场依赖性，并且已经确定这些依赖性涉及由铁磁共振和反共振引起的一些特征。