A Study of the Defects Produced By the Growth, Post Treatment, and Fabrication of Quartz Devices.
Abstract
At Oklahoma State University we are using acoustic loss, IR, ESR, and current-versus-time measurements to characterize the electrodiffusion process in quartz. Commercial sweeping is done in air and replaces the alkali ions with protons. We are carrying out this study using H2, D2, and vacuum atmospheres. The current-versus-time curves for H2 and D2 electro-diffusion show a rapid initial drop and then level off to a small steady current. We believe that the initial drop is caused by the rapid removal of the alkali ions. For alkali sweeps, steady currents are observed and only small electric fields are required. Acoustic loss measurements verify that Na(+) and Li(+) can be readily interchanged. The results for K(+) are, at this time, uncertain. An initial vacuum electrolysis run showed that the current stopped after a short time, and subsequent IR and ESR tests showed that only a small amount of hydrogen was swept into the sample. We believe that the electrodiffusion can continue only as long as replacement ions (in this case protons) are brought into the sample. A study of the acoustic loss spectrum of a series of 5 MHz 5th overtone AT-cut resonator blanks all fabricated from the same bar of Premium Q grade quartz as a function of electrolysis and irradiation is nearly complete.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1982
- Accession Number
- ADA120649
Entities
People
- Joel J. Martin
- Larry E. Halliburton
- William A. Sibley
Organizations
- Oklahoma State University–Stillwater