Mechanism of the giant permittivity in Sm modified SrTiO3 sintered at different atmospheres

Xindi Huang; Hanxing Liu; Shujun Zhang; Guangyao Li; Hua Hao; Minghe Cao; Zhonghua Yao; Juan Xie

doi:10.1007/s10854-018-9250-6

Mechanism of the giant permittivity in Sm modified SrTiO₃ sintered at different atmospheres

Xindi Huang
, Hanxing Liu
, Shujun Zhang
, Guangyao Li
, Hua Hao
, Minghe Cao
, Zhonghua Yao
, Juan Xie

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

9 Citations (Scopus)

Abstract

The pure and Sm modified SrTiO₃ ceramics have been fabricated by solid state reaction method at different atmospheres, including ambient, reduced and oxidized conditions. All studied ceramics are in single cubic perovskite phase with high bulk density, where Sm doped ceramics possess decreased grain size. The room temperature permittivities of Sr_0.97Sm_0.02TiO₃ and Sr_0.98Sm_0.02TiO₃ sintered in N₂ were found to be on the order of 25120 and 13370 at 1 kHz with dielectric loss being 0.044 and 0.008. The giant permittivities were associated with the increase of Ti³⁺ ions, which were due to the combination of Ti⁴⁺ ions and electrons. With increasing Ti³⁺ ions, the concentration of Ti⁴⁺ ions, Ti³⁺ ions and VO·· reach the balance where the defect dipoles [Ti4+·e-VO··-Ti4+·e] were created, responsible for the low dielectric loss. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.

Original language	English
Pages (from-to)	11546-11552
Journal	Journal of Materials Science: Materials in Electronics
Volume	29
Issue number	13
DOIs	https://doi.org/10.1007/s10854-018-9250-6
Publication status	Published - 1 Jul 2018
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

Acknowledgements This work was supported by NSFC-Guangdong Joint Funds of the Natural Science Foundation of China (No. U1601209), the National Key Basic Research Program of China (973 Program) (No. 2015CB654601) and Natural Science Foundation of China (No. 51372191).

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title = "Mechanism of the giant permittivity in Sm modified SrTiO3 sintered at different atmospheres",

abstract = "The pure and Sm modified SrTiO3 ceramics have been fabricated by solid state reaction method at different atmospheres, including ambient, reduced and oxidized conditions. All studied ceramics are in single cubic perovskite phase with high bulk density, where Sm doped ceramics possess decreased grain size. The room temperature permittivities of Sr0.97Sm0.02TiO3 and Sr0.98Sm0.02TiO3 sintered in N2 were found to be on the order of 25120 and 13370 at 1 kHz with dielectric loss being 0.044 and 0.008. The giant permittivities were associated with the increase of Ti3+ ions, which were due to the combination of Ti4+ ions and electrons. With increasing Ti3+ ions, the concentration of Ti4+ ions, Ti3+ ions and VO·· reach the balance where the defect dipoles [Ti4+·e-VO··-Ti4+·e] were created, responsible for the low dielectric loss. {\textcopyright} 2018, Springer Science+Business Media, LLC, part of Springer Nature.",

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T1 - Mechanism of the giant permittivity in Sm modified SrTiO3 sintered at different atmospheres

AU - Huang, Xindi

AU - Liu, Hanxing

AU - Zhang, Shujun

AU - Li, Guangyao

AU - Hao, Hua

AU - Cao, Minghe

AU - Yao, Zhonghua

AU - Xie, Juan

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/7/1

Y1 - 2018/7/1

N2 - The pure and Sm modified SrTiO3 ceramics have been fabricated by solid state reaction method at different atmospheres, including ambient, reduced and oxidized conditions. All studied ceramics are in single cubic perovskite phase with high bulk density, where Sm doped ceramics possess decreased grain size. The room temperature permittivities of Sr0.97Sm0.02TiO3 and Sr0.98Sm0.02TiO3 sintered in N2 were found to be on the order of 25120 and 13370 at 1 kHz with dielectric loss being 0.044 and 0.008. The giant permittivities were associated with the increase of Ti3+ ions, which were due to the combination of Ti4+ ions and electrons. With increasing Ti3+ ions, the concentration of Ti4+ ions, Ti3+ ions and VO·· reach the balance where the defect dipoles [Ti4+·e-VO··-Ti4+·e] were created, responsible for the low dielectric loss. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.

AB - The pure and Sm modified SrTiO3 ceramics have been fabricated by solid state reaction method at different atmospheres, including ambient, reduced and oxidized conditions. All studied ceramics are in single cubic perovskite phase with high bulk density, where Sm doped ceramics possess decreased grain size. The room temperature permittivities of Sr0.97Sm0.02TiO3 and Sr0.98Sm0.02TiO3 sintered in N2 were found to be on the order of 25120 and 13370 at 1 kHz with dielectric loss being 0.044 and 0.008. The giant permittivities were associated with the increase of Ti3+ ions, which were due to the combination of Ti4+ ions and electrons. With increasing Ti3+ ions, the concentration of Ti4+ ions, Ti3+ ions and VO·· reach the balance where the defect dipoles [Ti4+·e-VO··-Ti4+·e] were created, responsible for the low dielectric loss. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.

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DO - 10.1007/s10854-018-9250-6

M3 - RGC 21 - Publication in refereed journal

SN - 0957-4522

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SP - 11546

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JO - Journal of Materials Science: Materials in Electronics

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