An ultralinear stresscompensated temperature sensor
Abstract
Stresscompensated quartz resonators having ultralinear frequencytemperature responses (NLSC cuts) have been discovered. They consist of doubly rotated cuts in which the orientations, defined in terms of the polar angles phi(0) and theta(0), lie on a locus where the secondorder temperature coefficients of frequency are zero in the range of phi(0) = 20 deg + or  2 deg and theta(0) = 20 deg + or  5 deg. These angles of orientation are in close proximity to, or on the locus of, zero frequency coefficients of stress. In the vicinity of the NLSC cuts, a relatively strong 1,2,3,1 Xray plane has been found to exist at the quartz crystal orientation of phi(0) substantially equal to 19.1 deg and theta(0) substantially equal to + 16.6 deg. This Xray plane makes the manufacture of NLSC cuts easier and cheaper than ones previously reported. The theoretical and experimental values of the frequencytemperature responses and some physical features for NLSC cuts are discussed.
 Publication:

IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control
 Pub Date:
 March 1987
 Bibcode:
 1987ITUFF..34..270N
 Keywords:

 Compensation;
 Quartz Crystals;
 Resonant Frequencies;
 Resonators;
 Stresses;
 Temperature Sensors;
 Cartesian Coordinates;
 Metrology;
 Piezoelectricity;
 Instrumentation and Photography