On the permittivity of titanium dioxide
| Autor: | Lasse Vines, Julie Bonkerud, Eduard Monakhov, Christian Zimmermann, Philip Weiser |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Permittivity
Materials for devices Work (thermodynamics) Materials science Electronic properties and materials Hydrogen Science chemistry.chemical_element 02 engineering and technology 01 natural sciences Article chemistry.chemical_compound 0103 physical sciences Electrical conductor 010302 applied physics Range (particle radiation) Multidisciplinary Condensed matter physics Doping 021001 nanoscience & nanotechnology chemistry Rutile Titanium dioxide Medicine 0210 nano-technology Materials for energy and catalysis |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-5 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|