Study on the dielectric properties of Mg-doped NaBiTi6O14 ceramics

doi:10.1088/1674-1056/26/4/047701

中国物理B ›› 2017, Vol. 26 ›› Issue (4): 47701-047701.doi: 10.1088/1674-1056/26/4/047701

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Study on the dielectric properties of Mg-doped NaBiTi₆O₁₄ ceramics

Yong Chen(陈勇), Simin Xue(薛思敏), Qian Luo(骆迁), Huyin Su(苏虎音), Qi Chen(陈琪), Zhen Huang(黄镇), Linfang Xu(徐玲芳), Wanqiang Cao(曹万强), Zhaoxiang Huang(黄兆祥)

1 School of Physics and Electronic Science, Key Laboratory of Ferro & Piezoelectric Materials and Devices of Hubei Province, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei University, Wuhan 430062, China;
2 School of Materials Science and Engineering, Hubei University, Wuhan 430062, China;
3 Department of Information Science and Technology, WenHua College, Wuhan 430074, China

收稿日期:2016-10-18 修回日期:2017-01-20 出版日期:2017-04-05 发布日期:2017-04-05
通讯作者: Wanqiang Cao, Zhaoxiang Huang E-mail:caowanq@163.com;huangzhaox@163.com
基金资助:
Project supported by the Fund from the Hubei Provincial Department of Education, China (Grant No. D20161006).

Study on the dielectric properties of Mg-doped NaBiTi₆O₁₄ ceramics

Yong Chen(陈勇)¹, Simin Xue(薛思敏)¹, Qian Luo(骆迁)¹, Huyin Su(苏虎音)¹, Qi Chen(陈琪)¹, Zhen Huang(黄镇)¹, Linfang Xu(徐玲芳)¹, Wanqiang Cao(曹万强)^1,2, Zhaoxiang Huang(黄兆祥)³

1 School of Physics and Electronic Science, Key Laboratory of Ferro & Piezoelectric Materials and Devices of Hubei Province, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei University, Wuhan 430062, China;
2 School of Materials Science and Engineering, Hubei University, Wuhan 430062, China;
3 Department of Information Science and Technology, WenHua College, Wuhan 430074, China

Received:2016-10-18 Revised:2017-01-20 Online:2017-04-05 Published:2017-04-05
Contact: Wanqiang Cao, Zhaoxiang Huang E-mail:caowanq@163.com;huangzhaox@163.com
Supported by:
Project supported by the Fund from the Hubei Provincial Department of Education, China (Grant No. D20161006).

摘要/Abstract

摘要： With the interest in using lead-free materials to replace lead-containing materials increasing, the use of Na_0.5Bi_0.5TiO₃ (NBT) has come into our sight. We studied the composition of NBT and found that NaBiTi₆O₁₄ ceramics can be compositionally tuned by Mg-doping on the Ti-site to optimize the dielectric properties. In this study, Mg-doped NaBiTi₆O₁₄ (NaBi(Ti_0.98Mg_0.02)₆O_14-δ) ceramics were prepared by a conventional mixed oxide route at different sintering temperatures, and their dielectric properties have been studied at a wide temperature range. X-ray diffraction (XRD) patterns of the NBT-based ceramics indicate that all samples have a pure phase without any secondary impurity phase. The experimental data show that after Mg-doping, the relative permittivity and dielectric loss become lower at 1040, 1060, and 1080℃ except 1020℃ and at different frequencies from 10 kHz, 100 kHz to 1 MHz. Take 1060℃ for example, when the sintering temperature is 1060℃ at 1 MHz, the minimum relative permittivity of NaBiTi₆O₁₄ is 32.9 and the minimum dielectric loss is 0.01417, the relative permittivity of NaBi(Ti_0.98Mg_0.02)₆O_14-δ under the same condition is 25.8 and the dielectric loss is 0.000104. We explored the mechanism of Mg-doping and surprisingly found that the dielectric property of NaBi(Ti_0.98Mg_0.02)₆O_14-δ becomes better owing to Mg-doping. Thus, NaBi(Ti_0.98Mg_0.02)₆O_14-δ can be used in microwave ceramics and applied to new energy materials.

关键词: NaBiTi₆O₁₄, permittivity, loss (tanδ), dielectric ceramics

Abstract: With the interest in using lead-free materials to replace lead-containing materials increasing, the use of Na_0.5Bi_0.5TiO₃ (NBT) has come into our sight. We studied the composition of NBT and found that NaBiTi₆O₁₄ ceramics can be compositionally tuned by Mg-doping on the Ti-site to optimize the dielectric properties. In this study, Mg-doped NaBiTi₆O₁₄ (NaBi(Ti_0.98Mg_0.02)₆O_14-δ) ceramics were prepared by a conventional mixed oxide route at different sintering temperatures, and their dielectric properties have been studied at a wide temperature range. X-ray diffraction (XRD) patterns of the NBT-based ceramics indicate that all samples have a pure phase without any secondary impurity phase. The experimental data show that after Mg-doping, the relative permittivity and dielectric loss become lower at 1040, 1060, and 1080℃ except 1020℃ and at different frequencies from 10 kHz, 100 kHz to 1 MHz. Take 1060℃ for example, when the sintering temperature is 1060℃ at 1 MHz, the minimum relative permittivity of NaBiTi₆O₁₄ is 32.9 and the minimum dielectric loss is 0.01417, the relative permittivity of NaBi(Ti_0.98Mg_0.02)₆O_14-δ under the same condition is 25.8 and the dielectric loss is 0.000104. We explored the mechanism of Mg-doping and surprisingly found that the dielectric property of NaBi(Ti_0.98Mg_0.02)₆O_14-δ becomes better owing to Mg-doping. Thus, NaBi(Ti_0.98Mg_0.02)₆O_14-δ can be used in microwave ceramics and applied to new energy materials.

Key words: NaBiTi₆O₁₄, permittivity, loss (tanδ), dielectric ceramics

中图分类号: (Dielectric properties of solids and liquids)

77.22.-d

77.84.-s (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)

陈勇, 薛思敏, 骆迁, 苏虎音, 陈琪, 黄镇, 徐玲芳, 曹万强, 黄兆祥. Study on the dielectric properties of Mg-doped NaBiTi₆O₁₄ ceramics[J]. 中国物理B, 2017, 26(4): 47701-047701.

Yong Chen(陈勇), Simin Xue(薛思敏), Qian Luo(骆迁), Huyin Su(苏虎音), Qi Chen(陈琪), Zhen Huang(黄镇), Linfang Xu(徐玲芳), Wanqiang Cao(曹万强), Zhaoxiang Huang(黄兆祥). Study on the dielectric properties of Mg-doped NaBiTi₆O₁₄ ceramics[J]. Chin. Phys. B, 2017, 26(4): 47701-047701.

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Study on the dielectric properties of Mg-doped NaBiTi₆O₁₄ ceramics

Study on the dielectric properties of Mg-doped NaBiTi₆O₁₄ ceramics

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