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Effects of Mn2+doping on the microwave dielectric properties of Ti1−xCux/3Nb2x/3O2ceramics
Shao, Hui1,2; Liu, Zhifu1; Jian, Guang2; Ma, Mingsheng1; Li, Yongxiang1,3
2017
Source PublicationCeramics International
ISSN02728842
Volume43Issue:16Pages:13895-13900
AbstractIn this study, undoped and Mn2+doped Ti1−xCux/3Nb2x/3O2(TCN, x = 0.2, 0.25, 0.3, 0.35) ceramics were prepared using a solid-state reaction method. The phase composition and microstructure of the TCN ceramics were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results indicated that the density and permittivity of the TCN ceramics increase with the increasing of the Cu and Nb content. However, Q × f value of the undoped TCN ceramics decreases with an increase in the sintering temperature. A small amount of Mn2+doping has no effect on the permittivity, but improves the Q × f value. X-ray photoelectron spectroscopy (XPS) analysis indicated that the transition of Cu2+to Cu+during the sintering process could be inhibited by Mn2+doping, which suppresses the formation of oxygen vacancies, as a result, the improvement of Q × f value. Excellent microwave dielectric properties with a permittivity of 95 and Q × f value of 20800 GHz (@3.50 GHz) were achieved from the 0.6 at% Mn2+doped TCN (x = 0.25) ceramics sintered at 1025 °C for 5 h. © 2017 Elsevier Ltd and Techna Group S.r.l.
DOI10.1016/j.ceramint.2017.07.115
EI Accession Number20172903962938
EI KeywordsX ray photoelectron spectroscopy
EI Classification Number741.3 Optical Devices and Systems - 802.2 Chemical Reactions - 812.1 Ceramics - 931.2 Physical Properties of Gases, Liquids and Solids - 933.1 Crystalline Solids
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25887
Collection中国科学院上海硅酸盐研究所
Affiliation1.CAS Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.School of Materials and Engineering, Jiangsu University of Science and Technology, Zhengjiang; 2132003, China;
3.School of Engineering, RMIT University, Melbourne; VIC; 3001, Australia
Recommended Citation
GB/T 7714
Shao, Hui,Liu, Zhifu,Jian, Guang,et al. Effects of Mn2+doping on the microwave dielectric properties of Ti1−xCux/3Nb2x/3O2ceramics[J]. Ceramics International,2017,43(16):13895-13900.
APA Shao, Hui,Liu, Zhifu,Jian, Guang,Ma, Mingsheng,&Li, Yongxiang.(2017).Effects of Mn2+doping on the microwave dielectric properties of Ti1−xCux/3Nb2x/3O2ceramics.Ceramics International,43(16),13895-13900.
MLA Shao, Hui,et al."Effects of Mn2+doping on the microwave dielectric properties of Ti1−xCux/3Nb2x/3O2ceramics".Ceramics International 43.16(2017):13895-13900.
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