Origin of colossal dielectric permittivity of rutile Ti0.9In0.05Nb0.05O2: single crystal and polycrystalline
10.1038/srep21478
Crossref journal-article
Springer Science and Business Media LLC
Scientific Reports (297)
Abstract

AbstractIn this paper, we investigated the dielectric properties of (In + Nb) co-doped rutile TiO2 single crystal and polycrystalline ceramics. Both of them showed colossal, up to 104, dielectric permittivity at room temperature. The single crystal sample showed one dielectric relaxation process with a large dielectric loss. The voltage-dependence of dielectric permittivity and the impedance spectrum suggest that the high dielectric permittivity of single crystal originated from the surface barrier layer capacitor (SBLC). The impedance spectroscopy at different temperature confirmed that the (In + Nb) co-doped rutile TiO2 polycrystalline ceramic had semiconductor grains and insulating grain boundaries and that the activation energies were calculated to be 0.052 eV and 0.35 eV for grain and grain boundary, respectively. The dielectric behavior and impedance spectrum of the polycrystalline ceramic sample indicated that the internal barrier layer capacitor (IBLC) mode made a major contribution to the high ceramic dielectric permittivity, instead of the electron-pinned defect-dipoles.

Bibliography

Song, Y., Wang, X., Sui, Y., Liu, Z., Zhang, Y., Zhan, H., Song, B., Liu, Z., Lv, Z., Tao, L., & Tang, J. (2016). Origin of colossal dielectric permittivity of rutile Ti0.9In0.05Nb0.05O2: single crystal and polycrystalline. Scientific Reports, 6(1).

Authors 11
  1. Yongli Song (first)
  2. Xianjie Wang (additional)
  3. Yu Sui (additional)
  4. Ziyi Liu (additional)
  5. Yu Zhang (additional)
  6. Hongsheng Zhan (additional)
  7. Bingqian Song (additional)
  8. Zhiguo Liu (additional)
  9. Zhe Lv (additional)
  10. Lei Tao (additional)
  11. Jinke Tang (additional)
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Dates
Type When
Created 9 years, 6 months ago (Feb. 12, 2016, 5:36 a.m.)
Deposited 2 years, 7 months ago (Jan. 4, 2023, 8:30 a.m.)
Indexed 11 months, 1 week ago (Sept. 19, 2024, 11:41 a.m.)
Issued 9 years, 6 months ago (Feb. 12, 2016)
Published 9 years, 6 months ago (Feb. 12, 2016)
Published Online 9 years, 6 months ago (Feb. 12, 2016)
Funders 0

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@article{Song_2016, title={Origin of colossal dielectric permittivity of rutile Ti0.9In0.05Nb0.05O2: single crystal and polycrystalline}, volume={6}, ISSN={2045-2322}, url={http://dx.doi.org/10.1038/srep21478}, DOI={10.1038/srep21478}, number={1}, journal={Scientific Reports}, publisher={Springer Science and Business Media LLC}, author={Song, Yongli and Wang, Xianjie and Sui, Yu and Liu, Ziyi and Zhang, Yu and Zhan, Hongsheng and Song, Bingqian and Liu, Zhiguo and Lv, Zhe and Tao, Lei and Tang, Jinke}, year={2016}, month=feb }