DocumentCode :
2667077
Title :
Irreversible frequency variations in time of precision quartz crystal units
Author :
Smagin, A.G.
Author_Institution :
Crystal Co., Moscow, Russia
fYear :
1994
fDate :
1-3 Jun 1994
Firstpage :
541
Lastpage :
543
Abstract :
General ageing reasons, inherent to all piezoelectric resonators, fall into the following groups: subsurface, structural and contact ones. High-Q and high-stability quartz crystal units have irreversible frequency variation with time due to structural reasons only. Long-term frequency instability due to ageing of precision quartz crystal oscillators constitutes the value of 1-2×10-12 per day, which agrees well with theoretical results at temperatures of the order of 310 K
Keywords :
ageing; crystal resonators; frequency stability; quartz; 310 K; SiO2; ageing; irreversible frequency variation; irreversible frequency variations; long-term frequency instability; piezoelectric resonators; precision quartz crystal units; Aging; Frequency; Lapping; Lattices; Metallization; Oscillators; Piezoelectric films; Potential energy; Surface cleaning; Surface treatment;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Frequency Control Symposium, 1994. 48th., Proceedings of the 1994 IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-1945-1
Type :
conf
DOI :
10.1109/FREQ.1994.398285
Filename :
398285
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2667077
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