UBC Theses and Dissertations

UBC Theses Logo

UBC Theses and Dissertations

Microwave dielectric resonances in TTF-TCNQ Barry, Charles Patrick


Dielectric resonances in the microwave region 16 to 40 GHz have been observed in single crystals of the highly anisotropic material TTF-TCNQ below 25°K. The application of open-circuit boundary conditions to the dielectric resonator problem is shown to be inappropriate for this material and a tractable alternative theory, which takes external fields into account, is presented. Using this theory, the dielectric modes were analyzed at 4.2°K to obtain the complex dielectric constant εb along the crystallographic b-axis. For four samples studied in detail, the average values for the real and imaginary parts of the dielectric constant are found to be 4200 and 16 respectively at 25 GHz. A frequency dependence of ε’b is found; however, it is not clear whether this frequency dependence is intrinsic to the samples or is due to the approximate nature of the solution. No frequency dependence of ε”b was observed.

Item Media

Item Citations and Data


For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.