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Differences in the Surface Charging at the (100) and (110) Surfaces of Li2B4O7

Published online by Cambridge University Press:  31 January 2011

David Wooten ,
Ihor Ketsman ,
Jie Xiao ,
Ya. B. Losovyj ,
James C. Petrosky ,
J. McClory ,
Ya. Burak ,
V. Adamiv  and
Peter A Dowben
David Wooten
Affiliation:
david.wooten@afit.edu, Air Force Institute of Technology, Engineering Physics, Dayton, Ohio, United States
Ihor Ketsman
Affiliation:
iketsman2@unl.edu, University of Nebraska-Lincoln, Physics Department, Lincoln, Nebraska, United States
Jie Xiao
Affiliation:
xiaojie@unlserve.unl.edu, University of Nebraska-Lincoln, Physics Department, Lincoln, Nebraska, United States
Ya. B. Losovyj
Affiliation:
ylosovyj@lsu.edu, Louisiana State University, Center for Advanced Microstructures and Devices, Baton Rouge, Louisiana, United States
James C. Petrosky
Affiliation:
James.Petrosky@afit.edu, Air Force Institute of Technology, Engineering Physics, Dayton, Ohio, United States
J. McClory
Affiliation:
John.McClory@afit.edu, Air Force Institute of Technology, Engineering Physics, Dayton, Ohio, United States
Ya. Burak
Affiliation:
burak@ifo.lviv.ua, Ivan Franko National University of Lviv, Institute of Physical Optics, Lviv, Ukraine
V. Adamiv
Affiliation:
adamiv@ifo.lviv.ua, Ivan Franko National University of Lviv, Institute of Physical Optics, Lviv, Ukraine
Peter A Dowben
Affiliation:
pdowben@unl.edu, University of Nebraska-Lincoln, Physics Department, Lincoln, Nebraska, United States
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Abstract

From angle resolved photoemission, the (100) surface termination of Li2B4O7 is significantly more polar than the (110) surface termination although the accepted dipole orientation of this pyroelectric crystal is along (001). Consistent with the surface termination, the surface charging at the surface of (100) is significantly greater than observed at (110) and plays a role in the surface photovoltage effects. Because of the different interfaces formed, device properties likely depend upon crystal faces of lithium borate.

Keywords

oxideLidielectric

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1164: Symposium L – Nuclear Radiation Detection Materials–2009 , 2009 , 1164-L04-04
Copyright
Copyright © Materials Research Society 2009

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