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Colossal permittivity behavior and its origin in rutile (Mg1/3Ta2/3)xTi1-xO2

Dong, Wen; Chen, Dehong; Hu, Wanbiao; Frankcombe, Terry; Chen, Hua; Zhou, Chao; Fu, Zhenxiao; Wei, Xiayong; Xu, Zhuo; Liu, Zhifu; Li, Yongxiang; Liu, Yun

Description

This work investigates the synthesis, chemical composition, defect structures and associated dielectric properties of (Mg2+, Ta5+) co-doped rutile TiO2 polycrystalline ceramics with nominal compositions of (Mg2+1/3Ta5+2/3) x Ti1−x O2. Colossal permittivity (>7000) with a low dielectric loss (e.g. 0.002 at 1 kHz) across a broad frequency/temperature range can be achieved at x = 0.5% after careful optimization of process conditions. Both experimental and theoretical evidence indicates such a...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
URI: http://hdl.handle.net/1885/217913
Source: Scientific Reports
DOI: 10.1038/s41598-017-08992-x

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