Low-Temperature Dielectric Cell (UPV/EHU)

Dielectric spectroscopy

Description

Dielectric spectroscopy consists in the study of the frequency dependent complex dielectric permittivity of insulator materials. The frequency range more commonly investigated is below a few GHz where the dielectric response of the insulator materials is usually dominated by orientational polarization processes. If the material under investigation contains permanent dipoles with a molecular origin, the dielectric spectroscopy would allow to get insight about the molecular motions.

In this instrument a broad-band spectrometer (10mHz- 1MHz) is connected to a sample cell mounted in the cold head of a close cycle refrigerator allowing to extend the temperature range down to 10 K.

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Local Contacts

• Prof. Angel Alegria
• Dr. Silvia Arrese-Igor

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