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BELL SYSTEM TECHNICAL JOURNAL 



h = temperature change of elastic constant matrix 

 Ts = temperature coeflQcient of elastic modulus terms 

 Tc = temperature coefficient of elastic constant terms 

 A — temperature expansion matrix 

 d = piezo-electric constant matrix 

 g = inverse piezo effect matrix 

 G = electro-striction matrix 

 Z = electro-optic matrix 

 IT — stress optic matrix 

 m = strain optic matrix 



P — polarization = elec. mom. per unit vol. = surface charge per unit 

 area 



P 



■q — susceptibility = 



E 



References as to Crystal Data 



1. Synimetrj' class — Chemische Kristallographie, Vols. I-V by Paul Groth. 



2. Properties of Quartz — The Properties of Silica by R. B. Sosman. 



3. Elastic and piezoelectric properties of quartz and rochelle salt — Electrical and Mechani- 



cal Wave Transducers by W. P. Alason. 



