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Proceedings Paper

Electronic structure of KTiOAsO4, a novel material for non-linear optical applications
Author(s): Victor Atuchin; Oleg Y. Khyzhun; V.L. Bekenev; A.K. Sinelnichenko; L. I. Isaenko; S. A. Zhurkov
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Paper Abstract

A high-quality KTiOAsO4 (KTA) single crystal has been successfully synthesized employing the high temperature solution growth technique with rotating and pooling. The XPS valence-band spectra have been measured for pristine and the 1.5 keV Ar+ ion-bombarded thin (001)KTA plate cut from the crystal part that was without any optical inhomogeneities or domain boundaries. The present XPS measurements have revealed the existence of two O 2s subbands on the XPS spectrum of the pristine (001)KTA surface. It has been established that 1.5 keV Ar+ ion bombardment of the (001)KTA surface causes the complete elimination of the O 2s sub-band related to oxygen atoms involved in the formation of Ti–O–As bonds in KTA. In addition, the XPS results reveal that such a treatment leads to a significant decrease of the relative intensity of the XPS As5+ 3d core-level spectrum and causes the formation of the additional As0 3d core-level spectrum in the topmost layer of the (001)KTA surface. The experimental data are compared to the results of the first-principles band-structure calculations of KTA.

Paper Details

Date Published: 8 May 2013
PDF: 8 pages
Proc. SPIE 8772, Nonlinear Optics and Applications VII, 87721I (8 May 2013); doi: 10.1117/12.2017597
Show Author Affiliations
Victor Atuchin, AV Rzhanov Institute of Semiconductor Physics (Russian Federation)
Oleg Y. Khyzhun, Frantsevych Institute for Problems of Materials Science (Ukraine)
V.L. Bekenev, Frantsevych Institute for Problems of Materials Science (Ukraine)
A.K. Sinelnichenko, Frantsevych Institute for Problems of Materials Science (Ukraine)
L. I. Isaenko, Institute of Geology and Mineralogy, Siberian Branch (Russian Federation)
S. A. Zhurkov, Institute of Geology and Mineralogy, Siberian Branch (Russian Federation)


Published in SPIE Proceedings Vol. 8772:
Nonlinear Optics and Applications VII
Mario Bertolotti; Joseph Haus; Alexei M. Zheltikov, Editor(s)

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