Document Type

Article

Publication Date

4-22-2013

Abstract

We find Mn surface segregation for single crystals of Mn doped Li2B4O7, nominally Li1.95Mn0.05B4O7(001), but as the temperature increases, evidence of this Mn surface segregation diminishes significantly. At room temperature, the surface photovoltaic charging is significant for this pyroelectric material but is quenched at a temperature well below that seen for the undoped Li2B4O7 samples. The suppression of surface charging in the region of 120 °C that accompanies the temperature of Mn dissolution in the bulk of Li2B4O7, i.e., the reversal of Mn surface segregation (215 °C), suggests that along the (001) direction, ionic transport must be considered as significant.

Comments

Publisher version at Scitation (AIP): https://doi.org/10.1063/1.4802760

All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY 4.0) license (http://creativecommons.org/licenses/by/4.0/).

http://sherpa.ac.uk/romeo/issn/0003-6951/ -- "12 months embargo."

DOI

10.1063/1.4802760

Source Publication

Applied Physics Letters

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