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Characterization of the Solid State Properties of Anodic Oxides on Magnetron Sputtered Ta, Nb and Ta-Nb Alloys
| Title: | Characterization of the Solid State Properties of Anodic Oxides on Magnetron Sputtered Ta, Nb and Ta-Nb Alloys |
| Authors: | Di Franco, F. Browse this author | | Zampardi, G. Browse this author | | Santamaria, M. Browse this author | | Di Quarto, F. Browse this author | | Habazaki, H. Browse this author |
| Issue Date: | 2012 |
| Publisher: | The Electrochemical Society |
| Journal Title: | Journal of the Electrochemical Society |
| Volume: | 159 |
| Issue: | 1 |
| Start Page: | C33 |
| End Page: | C39 |
| Publisher DOI: | 10.1149/2.031201jes |
| Abstract: | Tantalum oxide, niobium oxide and Ta-Nb containing mixed oxides were grown by anodizing sputter-deposited Ta, Nb and Ta-Nb alloys of different compositions. A photoelectrochemical investigation was performed in order to estimate the band gap and the flat band potential of the oxides as a function of their composition. The band gap of the investigated Ta-Nb containing mixed oxides changed monotonically between those estimated for Ta2O5 (4.1 eV) and Nb2O5 (3.4 eV) and in agreement with a proposed correlation between the Band gap of an oxide and the difference of electronegativity of the oxide constituents. From the differential capacitance curves recorded in a wide range of electrode potential and for several frequencies of the alternative signal, the dielectric constant of the investigated oxides were estimated. |
| Rights: | © The Electrochemical Society, Inc. 2011. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in J. Electrochem. Soc., Volume 159, Issue 1, pp. C33-C39 (2012) |
| Type: | article |
| URI: | http://hdl.handle.net/2115/48149 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 幅崎 浩樹
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