Oxygen pressure effect on lattice parameters of SrTiO3 and SrNb0.2Ti0.8O3 thin films and laser-induced thermoelectric voltages effect
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Published:2008
Issue:7
Volume:57
Page:4424
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ISSN:1000-3290
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Container-title:Acta Physica Sinica
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language:
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Short-container-title:Acta Phys. Sin.
Author:
Liu Ting ,Tan Song-Lin ,Zhang Hui ,Qin Yi ,Zhang Peng-Xiang ,
Abstract
SrTiO3 and SrNb0.2Ti0.8O3 thin films were prepared by pulsed laser deposition technique on LaAlO3 (100) single crystal substrates. X-ray diffraction shows that all the thin films have[001] orientation. With the oxygen pressure increasing, the lattice parameter c of SrTiO3 thin films decreases, while the lattice parameter c of SrNb0.2Ti0.8O3 thin films decreases and then increases. Meanwhile, the optimal oxygen pressure to prepare (SrTiO3/SrNb0.2Ti0.8O3)L multilayer of two-dimensional electron gas was found to be 1.0×10-2Pa. In addition, laser-induced thermoelectric voltage effect was observed on SrNb0.2Ti0.8O3 thin film prepared on vicinal-cut LaAlO3 (100) substrate for the first time.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Cited by
2 articles.
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