TITLE

1/f noise in quartz crystal resonators in relation to acoustic losses and frequency dispersion

AUTHOR(S)
Planat, M.; Gagnepain, J. J.
PUB. DATE
March 1987
SOURCE
Applied Physics Letters;3/2/1987, Vol. 50 Issue 9, p510
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The 1/f frequency fluctuation of quartz crystal resonators between liquid helium and room temperature is investigated in relation with acoustic attenuation. Large attenuation is observed at 50 K, due to ionic Na+ impurity relaxation, at 20 K, corresponding to the interaction of the sound wave with thermal phonons, and below 7 K, which is a behavior already reported in amorphous glasses. A strong correlation is found between 1/f noise level and acoustic attenuation around the phonon-phonon relaxation peak; this correlation is not observed on the Na+ impurity peak. Below 7 K, 1/f noise also increases in relation with losses. A possible physical mechanism for 1/f noise in quartz resonators is discussed.
ACCESSION #
9822247

 

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