Electrical effect and influence factors of tourmaline

Authors

Qi Lu, China University of Geosciences, Beijing
Bowen Li, Michigan Technological UniversityFollow
Feng Bai, China University of Geosciences, Beijing

Document Type

Book Chapter

Publication Date

1-1-2016

Department

Department of Materials Science and Engineering

Abstract

Tourmaline is a crystalline boron silicate mineral with special electrical and optical behaviors. In this study, electrical performances of crystalline tourmaline samples from various deposit sites in China were evaluated. The results show that the piezoelectric constants of tourmalines, in a fixed crystalline direction, depend on their mineral species and the specialty elements in the crystal. The piezoelectric constant of dravite is higher than that of elbaite. The variety of piezoelectricity is resulted from the element type in crystal structure. Dielectric properties tests show that tourmaline is a low dielectric constant material and the dielectric constant is from 4×10-12pf/cm to 10×10-12pf/cm. The dielectric constant along C axis is higher than that in any other directions. Under room temperature, pyroelectric property of a crystal is proportional to the dielectric properties, and negatively correlated to the ferric oxide ratio.

Publisher's Statement

© 2016 by The Minerals, Metals & Materials Society.

Publication Title

Characterization of Minerals, Metals, and Materials 2016

Recommended Citation

Lu, Q., Li, B., & Bai, F. (2016). Electrical effect and influence factors of tourmaline. Characterization of Minerals, Metals, and Materials 2016, 83-90. http://doi.org/10.1007/978-3-319-48210-1_10
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/4124