Abstract

The temperature-frequency characteristics (TFCs) of thermosensitive yxbl/10°54′/11°06′-cut quartz resonators are investigated in the temperature range 300-4.2 K. The linear character of the TFC is kept within the range 300–170 K but after that a non-linearity is observed, which can be expressed approximately by a polynomial of third order. The resonators have high temperature sensitivity, 80 mK at 4.2 K and 1 mK at temperatures over 30 K, and are insensitive towards magnetic fields. The investigations show that the temperature-sensitive sensor could be used as a temperature sensor for cryogenic temperatures.

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