Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/95887
Title: | Colossal permittivity of (Mg + Nb) co-doped TiO2 ceramics with low dielectric loss | Authors: | Yang, C Tse, MY Wei, X Hao, J |
Issue Date: | 7-Jun-2017 | Source: | Journal of materials chemistry C, 7 June 2017, v. 5, no. 21, p. 5170-5175 | Abstract: | A high dielectric loss is one of the difficulties that hinder the application of colossal permittivity (CP) materials. Here we report the CP behaviors in ceramics of rutile (Mg + Nb) co-doped TiO2, i.e., (Mg1/3Nb2/3)xTi1-xO2. The room-temperature dielectric properties of the pure homogenous ceramics include a relatively high CP (>104) and an acceptable dielectric loss (<0.1) at frequencies from 102 to 105 Hz in the doping concentration range of 0.5% to 7%. In particular, an excellent low dielectric loss of 0.0083 and a high dielectric permittivity of 3.87 × 104 at 1 kHz were obtained for the 1% doped sample. Moreover, the temperature stability (room temperature ∼ 180 °C) and frequency stability (102-105 Hz) of the CP properties were studied. X-ray photoelectron spectroscopy suggests that the superior CP properties could be explained by the electron-pinned defect-dipole mechanism. | Publisher: | Royal Society of Chemistry | Journal: | Journal of materials chemistry C | ISSN: | 2050-7526 | EISSN: | 2050-7534 | DOI: | 10.1039/c7tc01020f | Rights: | This journal is © The Royal Society of Chemistry 2017 The following publication Yang, C., Tse, M. Y., Wei, X., & Hao, J. (2017). Colossal permittivity of (Mg+ Nb) co-doped TiO 2 ceramics with low dielectric loss. Journal of Materials Chemistry C, 5(21), 5170-5175 is available at https://doi.org/10.1039/c7tc01020f. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Yang_Colossal_Permittivity_Co-doped.pdf | Pre-Published version | 776.73 kB | Adobe PDF | View/Open |
Page views
58
Last Week
0
0
Last month
Citations as of May 19, 2024
Downloads
59
Citations as of May 19, 2024
SCOPUSTM
Citations
122
Citations as of May 17, 2024
WEB OF SCIENCETM
Citations
117
Citations as of May 16, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.