Energy trapping thickness mode gyroscopes using high performance crystalline materials.

This paper present calculations showing the interest of to make gyroscopes that use cuts normal to a three fold symmetry axis of several new materials of call 32 or 3m to build sensitive and stable gyroscopes using lateral field excitation and detection. The main factors of the sensitivity are studied and it is shown that lithium tantalate and gallium phosphate present an interesting ensemble of very favorable properties including good energy trapping properties. Experimental results have confirmed the possibility of very large Q factors.