Acoustic loss phenomena in alpha quartz-crystal resonators over the 1.4–77 K temperature range

Abstract

Articles you may be interested inStabilization of sample temperature in a surface-science vacuum chamber to 0.03 K and quartz-crystal microbalance frequency to 0.06 Hz over 0.5 h Rev. Sci. Instrum. 81, 103901 (2010); 10.1063/1.3488368Ultrahigh vacuum apparatus for quartz crystal microbalance measurements in the temperature range 4-400 K Rev.

Recent investigations on BAW resonators at cryogenic temperatures

“…Quartz BVA resonators are the subject of investigation of the present section, because it has been already shown that electrodeless resonators exhibit higher quality factors than electrode-deposited resonators [5]. More precisely the planoconvex SC-cut resonators optimized at room temperatures are chosen here as the most modern devices (active part diameter: 11 mm, thickness: 0.54 mm, curvature radius: 300 mm).…”

Advances in development of quartz crystal oscillators at liquid helium temperatures

“…In addition to this, the resonator phase noise at the given condition has been measured 18 . The choice of the resonator was fixed upon the BVA (Boîtierà Vieillissement Amélioré) resonators 32 , because it has been already shown that electrodeless resonators exhibit higher quality factors than electrode-deposited resonators 26 . More precisely, SC-cut resonators 33 optimized to work on the 3 rd overtone of the C-mode (5 MHz) at 80…”

“…Investigations in this field were continued by obtaining even higher Q-values [25][26][27][28][29] . Recently, systematic research of different properties of BAW devices at liquid helium temperatures has commenced at FEMTO-ST Institute, Besançon, France.…”

Quartz resonator instabilities under cryogenic conditions

“…The second solution is to find a crystal cut with a turn-over point in the temperature-frequency characteristic for liquid helium temperatures because the existence of such cuts is not known. Though Fc-cut resonators [6], [7] already exhibit a turn-over point, its parameters are not satisfactory for temperature compensation (it has a narrow parabolic shape rather than the desired cubic behavior). To find a satisfactory cut, the parameters of quartz at deep cryogenic temperatures must be derived.…”

“…The present research deals with quartz botier à vieillissement amélioré (BVa) resonators [16], because it has been already shown that electrodeless resonators exhibit higher quality factors than electrode-deposited resonators [6]. More precisely, measurements are made with planoconvex sc-cut resonators [17] optimized to work on the 3rd overtone of the c-mode (5 MHz) at 80°c.…”