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The Electronic Structure and Secondary Pyroelectric Properties of Lithium Tetraborate

The Electronic Structure and Secondary Pyroelectric Properties of Lithium Tetraborate

Volodymyr T Adamiv, Yaroslav V Burak, David J Wooten, John McClory, James Petrosky, Ihor Ketsman, Jie Xiao, Yaroslav B Losovyj, Peter A Dowben

Materials (Basel). 2010 Sep 1;3(9):4550-4579.

PMID: 28883341

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP12007602	Lithium tetraborate		12007-60-2	Price

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