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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Autores principales:	Julie Bonkerud, Christian Zimmermann, Philip Michael Weiser, Lasse Vines, Eduard V. Monakhov
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4ef0fac2a2514ca282be7fa34efc7827
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spelling	oai:doaj.org-article:4ef0fac2a2514ca282be7fa34efc78272021-12-02T16:04:36ZOn the permittivity of titanium dioxide10.1038/s41598-021-92021-52045-2322https://doaj.org/article/4ef0fac2a2514ca282be7fa34efc78272021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92021-5https://doaj.org/toc/2045-2322Abstract 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.Julie BonkerudChristian ZimmermannPhilip Michael WeiserLasse VinesEduard V. MonakhovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-5 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Julie Bonkerud Christian Zimmermann Philip Michael Weiser Lasse Vines Eduard V. Monakhov On the permittivity of titanium dioxide
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.
format	article
author	Julie Bonkerud Christian Zimmermann Philip Michael Weiser Lasse Vines Eduard V. Monakhov
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 Portfolio
publishDate	2021
url	https://doaj.org/article/4ef0fac2a2514ca282be7fa34efc7827
work_keys_str_mv	AT juliebonkerud onthepermittivityoftitaniumdioxide AT christianzimmermann onthepermittivityoftitaniumdioxide AT philipmichaelweiser onthepermittivityoftitaniumdioxide AT lassevines onthepermittivityoftitaniumdioxide AT eduardvmonakhov onthepermittivityoftitaniumdioxide
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On the permittivity of titanium dioxide

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