The Electronic Structure and Secondary Pyroelectric Properties of Lithium Tetraborate

Authors

Volodymyr T. Adamiv, Institute of Physical Optics - Lviv, Ukraine
Yaroslav V. Burak, Institute of Physical Optics - Lviv, Ukraine
David J. Wooten
John W. McClory, Air Force Institute of TechnologyFollow
James C. Petrosky, Air Force Institute of TechnologyFollow
Ihor Ketsman, University of Nebraska - Lincoln
Ya B. Losovyj, University of Nebraska - Lincoln
Peter A. Dowben, University of Nebraska - Lincoln
Jie Xiao, University of Nebraska - Lincoln

Document Type

Article

Publication Date

9-1-2010

Abstract

We review the pyroelectric properties and electronic structure of Li₂B₄O₇(110) and Li₂B₄O₇(100) surfaces. There is evidence for a pyroelectric current along the [110] direction of stoichiometric Li₂B₄O₇ so that the pyroelectric coefficient is nonzero but roughly 10³ smaller than along the [001] direction of spontaneous polarization. Abrupt decreases in the pyroelectric coefficient along the [110] direction can be correlated with anomalies in the elastic stiffness contributing to the concept that the pyroelectric coefficient is not simply a vector but has qualities of a tensor, as expected. The time dependent surface photovoltaic charging suggests that surface charging is dependent on crystal orientation and doping, as well as temperature.

Comments

This is an open access article published by MDPI and distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. CC BY 3.0  

Sourced from the published version of record cited below. 

DOI

10.3390/ma3094550

Source Publication

Materials (ISSN 1996-1944)

Recommended Citation

Adamiv, V. T., et al. (2010). The Electronic Structure and Secondary Pyroelectric Properties of Lithium Tetraborate. Materials, 3(9), 4550–4579. https://doi.org/10.3390/ma3094550