An XPS study of RF sputtered Ti1-x FexO2-delta thin films

• Autorzy: Dumitru L. , Apetrei R. , Dobromir M. , Dascaleanu V. , Teodorescu C M.
• Konferencja: 8th International Conference on Global Research and Education – Inter-Academia 2009
• Języki publikacji: EN

Abstrakty

EN

Introduction of small amounts of dopant Fe cations intitania was mainly intended for improving the oxidativepower of the host TiO2 surface, by shifting the absorption edge of the material towards the blue side of the visible range. Apart from this, other possible applications of Fe-containing TiO2 materials have been foreseen in the field of diluted ferromagnetic semiconductors for spintronics. As a general remark, while pristine and/or low-level doped titania materials remained a hot subject in basic research, and environment- and energy related applications, reports on Ti1-x FexO2 materials (x > 0.1) scarcely occurred in literature. We have initiated recently an investigation of heavily doped titania thin films within a wider iron compositionrange. Here, we report on the result of an XPS study of the RF sputtered oxygen-deficient thin films (x =0.15 - 0.62) and discuss the connection of the results with the macroscopic properties of the materials.

Słowa kluczowe

EN

Ti1-x FexO2-delta thin films; XPS; AFM; Fe2O3; hematite; magnetite

• Wydawca: Łukasiewicz Industrial Research Institute for Automation and Measurements PIAP
• Czasopismo: Journal of Automation Mobile Robotics and Intelligent Systems
• Rocznik: 2009
• Tom: Vol. 3, No. 4
• Strony: 15--17
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Dumitru L.

autor

Apetrei R.

autor

Dobromir M.

autor

Dascaleanu V.

autor

Teodorescu C M.

• Alexandru Ioan Cuza University of Iasi, 11 Carol I Blvd. 700506-Iasi, Romania. Phones: [phone], [phone], fax: [phone],

Bibliografia

• [1]Thompson T.L., Yates J.T. Jr., „Surface science studies of the photoactivation of TiO new photochemical processes”,Chem. Rev., no. 106, 2006, pp. 4428-4453.
• [2] Luca D., Teodorescu C.M., Apetrei R., Macovei D., Mardare D., „Preparation and characterization of in-creased- efficiency photo-catalytic TiO N thin films”,Thin Solid Films, no. 515, 2007, pp. 8605-8608.
• [3] Luca D., Macovei D., Teodorescu C.M., „Characterization of titania thin films prepared by reactive pulsed-laser ablation”, Surf. Sci., no. 600, 2006, pp. 4342-4346.
• [4] Coey J.M.D., Douvalis A.P., Fitzgerald C.B., Venkatesan M., „Ferromagnetism in Fe-doped SnO thin films”,Appl. Phys. Lett., no. 84, 2004, pp. 1332-1334.
• [5] Luca D., Mardare D., Iacomi F., Teodorescu C.M., Appl. Surf. Sci., no. 252, 2006, p. 6122 f.
• [6] Sreemany M., Sen S., „A simple spectro-photometric method for determination of the optical constants and band gap energy of multiple layer TiO thin films”,Mat.Chem. Phys., no. 83, 2004, pp. 169-177.
• [7] Mardare D., Iacomi F., Luca D., „Substrate and Fedoping effects on the hydrophilic properties of TiO thin films”, Thin Solid Films, no. 515, 2007, pp. 6474-6478.
• [8] Apetrei R., Negrila C., Macovei D., Dascaleanu V., Teodorescu C.-M., Mardare D., and Luca D., “Fabrication and characterization of nano-structured ferro-magneticTi Fe O thin films”. In: Proc. NSTI Nanotech 2009,www.nsti.org, ISBN 978-1-4398-1782-7, vol. 1, pp. 375-378.