Electro-optic properties of epitaxial Sr0.6Ba0.4Nb2O6 films grown on MgO substrates using LixNi2-xO buffer layer
In: Applied Physics A, Jg. 92 (2008-05-20), S. 397-400
Online
unknown
Zugriff:
Textured LixNi2-xO (LNO) thin films have been fabricated on (001)MgO substrates by pulsed laser deposition technique. The as-deposited LNO films shows a conductivity of 2.5×10-3 Ω m and possess a transmittance of about 35% in the visible region. Subsequent deposition of Sr0.6Ba0.4Nb2O6 (SBN60) thin film on these LNO-coated MgO substrates resulted in a textured SBN layer with a 〈001〉 orientation perpendicular to the substrate plane. Phi scans on the (221) plane of the SBN layer indicated that the films have two in-plane orientations with respect to the substrate. The SBN unit cells were rotated in the plane of the film by ± 8.2° as well as ± 45° with respect to the LNO/MgO substrate. Besides the highly (00l)-orientation, the SBN films also exhibited a dense microstructure as shown by scanning electron microscopy. The electro-optic coefficient (r33) of the SBN film was measured to be 186 pm/V. On the basis of our results, we have demonstrated that the LNO film can be used as a buffer layer as well as a transparent bottom electrode for waveguide applications. The SBN/LNO heterostructure is also a suitable candidate for integrated electro-optics devices.
Titel: |
Electro-optic properties of epitaxial Sr0.6Ba0.4Nb2O6 films grown on MgO substrates using LixNi2-xO buffer layer
|
---|---|
Autor/in / Beteiligte Person: | Mak, Cl L. ; Ye, H. ; Du, Piyi ; Wong, Kin-hung ; Li, X. T. |
Link: | |
Zeitschrift: | Applied Physics A, Jg. 92 (2008-05-20), S. 397-400 |
Veröffentlichung: | Springer Science and Business Media LLC, 2008 |
Medientyp: | unknown |
ISSN: | 1432-0630 (print) ; 0947-8396 (print) |
DOI: | 10.1007/s00339-008-4537-8 |
Schlagwort: |
|
Sonstiges: |
|