Skip to main content

Measurement of the complex permittivity of polycrystalline diamond by the resonator method in the millimeter range


An improved resonator method is developed, which allows for a change in the resonator coupling coefficient at insertion of the sample during the measurement of the imaginary part of the material permittivity. The method makes it possible to measure small samples. The permittivity at a frequency of 27GHz is measured for rods made of polycrystalline CVD diamond plates of 57 and 100mm in diameter grown in the microwave plasma in methane−hydrogen mixtures, and the loss tangent tan δ is determined at a level of the order of 10−3.

This is a preview of subscription content, access via your institution.


  1. B.M. Garin, V.V. Parshin, V.I. Polyakov, A.I. Rukovishnikov, E.A. Serov, O.S. Mocheneva, Ch.Ch. Jia, W.Z. Tang, and F.X. Lu, “Dielectric Properties and Applications of CVD Diamonds in the Millimeter and Terahertz Ranges,” in Recent Advances in Broadband Dielectric Spectroscopy (Springer, Netherlands, 2013), pp. 79–87.

    Chapter  Google Scholar 

  2. M Thumm, “Progress on Gyrotrons for ITER and Future Thermonuclear Fusion Reactors,” IEEE Trans. Plasma Sci. 39(4), 971 (2011).

    Article  ADS  Google Scholar 

  3. J.A. Dayton, G.T. Mearini, H. Chen, and C.L. Kory, “Diamond-Studded Helical Traveling Wave Tube,” IEEE Trans. Electron Dev. 52(5), 695 (2005).

    Article  ADS  Google Scholar 

  4. C.L. Kory, J.A. Dayton, G.T. Mearini, and M. Lueck, “Microfabricated 94 GHz TWT,” in Vacuum Electronics Conference, IEEE International (Monterey, CA, 22-24 April 2014), pp. 175–176 [DOI: 10.1109/IVEC.2014.6857547].

    Google Scholar 

  5. A.V. Galdetskii, “Promising Helical Attenuation Systems with Diamond Heat Removal for Powerful TWTs,” in Proceedings of the 14th International Conference “Microwave and Telecommunication Technology” (CriMiCo 2004) (Sevastopol, 13-17 September 2004), pp. 181–182 [in Russian].

    Google Scholar 

  6. M.P. Parkhomenko, D.S. Kalenov, and Yu.F. Abakumov, “Resonator Method for Determining Dielectric and Magnetic Parameters of Materials and an Experimental Setup on Its Basis in the Millimeter Wavelength Range,” Elektron. Tekh. Ser. 1: Microwave Technol. No. 2, 43 (2013) [in Russian].

    Google Scholar 

  7. I.V. Lebedev, Microwave Instruments and Techniques (Vysshaya Shkola, Moscow, 1970), Vol. 1 [in Russian].

    Google Scholar 

  8. A.S. Zav’yalov and G.E. Dunaevskii, Microwave Measurement of Parameters of Materials (Tomsk University, Tomsk, 1985) [in Russian].

    Google Scholar 

  9. E.L. Ginzton, MicrowaveMeasurements (McGraw-Hill, N.Y., 1957).

    Google Scholar 

  10. V.V. Nilol’skii and T.I. Nikol’skaya, Electrodynamics and Propagation of Radio Waves (Nauka, Moscow, 1989) [in Russian].

    Google Scholar 

  11. B.M. Garin, V.V. Parshin, S.E. Myasnikova, and V.G. Ralchenko, “Nature of Millimeter Wave Losses in Low Loss CVD Diamonds,” Diamond Relat. Mater. 12, 1755 (2003).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to M. P. Parkhomenko.

About this article

Verify currency and authenticity via CrossMark

Cite this article

Parkhomenko, M.P., Kalenov, D.S., Fedoseev, N.A. et al. Measurement of the complex permittivity of polycrystalline diamond by the resonator method in the millimeter range. Phys. Wave Phen. 23, 202–208 (2015).

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI:


  • Loss Tangent
  • Wave Phenomenon
  • Complex Permittivity
  • Cavity Resonator
  • Microwave Plasma