Paper Title:
Low Temperature Synthesis of TiO2 / SrTiO3 Films on Ti Substrate
  Abstract

The low temperature synthesis of TiO2 / SrTiO3 films on Ti substrate was examined focusing on the thickness, the adherence and the surface morphology of the films. The Ti substrate is superior to other ones such as glass, ITO etc from the viewpoint of electrical conductivity and formability. An amorphous-like (amo.) TiO2 film was prepared on the surface of Ti substrate by chemical treatment with H2O2/HCl aqueous solution. The thickness of the amo.TiO2 film increased almost linearly with the period of the chemical treatment, it had ranges of up to 1.5-2.0µm by the 120min treatment. When the period of chemical treatment was shorter than 60min, which corresponded to the thickness of about 1µm, the uniform and adhesive amo.TiO2 film could be obtained on the substrate. The chemical treatment longer than 60min resulted in inducing cracks in the amo.TiO2 film, they became clear by extending the treatment time. By annealing at 773-873K for 60min in air, the amo.TiO2 transformed mainly to the anatase-type TiO2 showing high crystallinity while a small amount of the rutile-type also appeared. On the other hand, the SrTiO3 film could be obtained on the Ti substrate by annealing the amo.TiO2 coated with Sr(NO3)2 above 773K in Ar. The adherence of the films was also kept after the heat treatments. The synthesis of such films hardly changed the thickness and the surface morphology. Thus, the TiO2, SrTiO3 films could be easily synthesised at low temperature on the Ti substrate by using the amo.TiO2 film prepared by the chemical treatment. In addition, the formation of TiO2 thin films on the SrTiO3 phase was also discussed.

  Info
Periodical
Edited by
Yukichi Umakoshi and Shinji Fujimoto
Pages
217-222
DOI
10.4028/www.scientific.net/MSF.512.217
Citation
M. Ueda, D. Ohzaike, S. Otsuka-Yao-Matsuo, "Low Temperature Synthesis of TiO2 / SrTiO3 Films on Ti Substrate", Materials Science Forum, Vol. 512, pp. 217-222, 2006
Online since
April 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Regina Kijkowska, Racquel Z. LeGeros
Abstract:Lanthanide phosphates are known as slightly soluble salts with their solubility products ranging from 10-25 to 10-27. These phosphates can be...
79
Authors: Jae Kwang Lee, Yun Ho Shin, Jin Wook Kang, Yong Sug Tak
Abstract:The effect of chemical pretreatments on the electrochemical etching behavior of aluminum was investigated with the topographic studies of...
1561
Authors: Walter Kenji Yoshito, Nildemar A.M. Ferreira, Ana Carolina S. Coutinho Rumbao, Dolores Ribeiro Ricci Lazar, Valter Ussui
Abstract:Titania ceramics have many applications due to its surface properties and, recently, its nanostructured compounds, prepared by hydrothermal...
788
Authors: Hsien Ta Hsu, Tsong Jen Yang
Abstract:Nickel-oxide duplex coatings were successfully deposited on magnesium alloy (AZ91D) by anodizing and electroless nickel-phosphorus plating...
90