Crossref journal-article
AIP Publishing
Journal of Applied Physics (317)
Abstract

Electrical conductivity of α quartz is ionic, the current being carried by alkali ions (M+) moving in channels parallel to the c axis. A study was made of conductivity σ of one natural and three synthetic crystals in order to better understand these ionic defects. ac measurements were made over a wide range of frequencies, and complex-impedance analysis was used to separate out the bulk conductivity from electrode effects. The activation energy E for the synthetic crystals was always close to 1.36 eV and the pre-exponential A was in the range of 106 K/Ω cm. A decrease in σ resulted from electrodiffusion (sweeping) in hydrogen. For the as-received natural crystal, the value of E was 0.82 eV, but this E value increased appreciably after hydrogen sweeping or after irradiation plus high-temperature anneal. The principal observations could not be interpreted in terms of the conventional theory in which the Al3+-M+ pair and its dissociation products are the only defects involved. A modified theory, in which additional unassociated Al is present as compensation either for H+ or for oxygen vacancies, allows a detailed interpretation of the results. Supporting data are also obtained from infrared measurements.

Bibliography

Jain, H., & Nowick, A. S. (1982). Electrical conductivity of synthetic and natural quartz crystals. Journal of Applied Physics, 53(1), 477–484.

Authors 2
  1. H. Jain (first)
  2. A. S. Nowick (additional)
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Dates
Type When
Created 22 years, 6 months ago (Feb. 14, 2003, 6:21 p.m.)
Deposited 1 year, 6 months ago (Feb. 4, 2024, 7:17 p.m.)
Indexed 8 months ago (Dec. 30, 2024, 1:08 p.m.)
Issued 43 years, 8 months ago (Jan. 1, 1982)
Published 43 years, 8 months ago (Jan. 1, 1982)
Published Print 43 years, 8 months ago (Jan. 1, 1982)
Funders 0

None

@article{Jain_1982, title={Electrical conductivity of synthetic and natural quartz crystals}, volume={53}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.329949}, DOI={10.1063/1.329949}, number={1}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Jain, H. and Nowick, A. S.}, year={1982}, month=jan, pages={477–484} }