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Quartz crystal resonators exhibiting extremely high Q-factors at cryogenic temperatures

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5 Author(s)
Galliou, S. ; Freq. & Time Dept., FEMTO-ST Inst., Besancon ; Imbaud, J. ; Bourquin, R. ; Bazin, N.
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5 MHz bulk acoustic wave resonators had already been immersed in cryostats in order to reach quality factors greater than tens of millions at 4 K. The cryostat has been substituted by a cryogenerator, which is easier to use. The first overtones of the three vibration modes of 10 MHz SC-cut electrodeless resonators have then been investigated, leading to extremely high Q-factors of about 130 times 106 at 31 MHz, measured at 3.3 K on an unexpected mode.

Published in:

Electronics Letters  (Volume:44 ,  Issue: 14 )

Date of Publication:

July 3 2008

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