On the permittivity of titanium dioxide
Abstract Conductive rutile TiO2 has received considerable attention recently due to multiple applications. However, the permittivity in conductive, reduced or doped TiO2 appears to cause controversy with reported values in the range 100–10,000. In this work, we propose a method for measurements of t...
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Nature Publishing Group
2021-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-92021-5 |
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doaj-4ef0fac2a2514ca282be7fa34efc78272021-06-20T11:35:32ZengNature Publishing GroupScientific Reports2045-23222021-06-011111510.1038/s41598-021-92021-5On the permittivity of titanium dioxideJulie Bonkerud0Christian Zimmermann1Philip Michael Weiser2Lasse Vines3Eduard V. Monakhov4Physics Department, Centre for Materials Science and Nanotechnology, University of OsloPhysics Department, Centre for Materials Science and Nanotechnology, University of OsloPhysics Department, Centre for Materials Science and Nanotechnology, University of OsloPhysics Department, Centre for Materials Science and Nanotechnology, University of OsloPhysics Department, Centre for Materials Science and Nanotechnology, University of OsloAbstract Conductive rutile TiO2 has received considerable attention recently due to multiple applications. However, the permittivity in conductive, reduced or doped TiO2 appears to cause controversy with reported values in the range 100–10,000. In this work, we propose a method for measurements of the permittivity in conductive, n-type TiO2 that involves: (i) hydrogen ion-implantation to form a donor concentration peak at a known depth, and (ii) capacitance–voltage measurements for donor profiling. We cannot confirm the claims stating an extremely high permittivity of single crystalline TiO2. On the contrary, the permittivity of conductive, reduced single crystalline TiO2 is similar to that of insulating TiO2 established previously, with a Curie–Weiss type temperature dependence and the values in the range 160–240 along with the c-axis.https://doi.org/10.1038/s41598-021-92021-5 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Julie Bonkerud Christian Zimmermann Philip Michael Weiser Lasse Vines Eduard V. Monakhov |
| spellingShingle |
Julie Bonkerud Christian Zimmermann Philip Michael Weiser Lasse Vines Eduard V. Monakhov On the permittivity of titanium dioxide Scientific Reports |
| author_facet |
Julie Bonkerud Christian Zimmermann Philip Michael Weiser Lasse Vines Eduard V. Monakhov |
| author_sort |
Julie Bonkerud |
| title |
On the permittivity of titanium dioxide |
| title_short |
On the permittivity of titanium dioxide |
| title_full |
On the permittivity of titanium dioxide |
| title_fullStr |
On the permittivity of titanium dioxide |
| title_full_unstemmed |
On the permittivity of titanium dioxide |
| title_sort |
on the permittivity of titanium dioxide |
| publisher |
Nature Publishing Group |
| series |
Scientific Reports |
| issn |
2045-2322 |
| publishDate |
2021-06-01 |
| description |
Abstract Conductive rutile TiO2 has received considerable attention recently due to multiple applications. However, the permittivity in conductive, reduced or doped TiO2 appears to cause controversy with reported values in the range 100–10,000. In this work, we propose a method for measurements of the permittivity in conductive, n-type TiO2 that involves: (i) hydrogen ion-implantation to form a donor concentration peak at a known depth, and (ii) capacitance–voltage measurements for donor profiling. We cannot confirm the claims stating an extremely high permittivity of single crystalline TiO2. On the contrary, the permittivity of conductive, reduced single crystalline TiO2 is similar to that of insulating TiO2 established previously, with a Curie–Weiss type temperature dependence and the values in the range 160–240 along with the c-axis. |
| url |
https://doi.org/10.1038/s41598-021-92021-5 |
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AT juliebonkerud onthepermittivityoftitaniumdioxide AT christianzimmermann onthepermittivityoftitaniumdioxide AT philipmichaelweiser onthepermittivityoftitaniumdioxide AT lassevines onthepermittivityoftitaniumdioxide AT eduardvmonakhov onthepermittivityoftitaniumdioxide |
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