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Research Article | Open Access

Effects of Ba and Ti co-doping on BiFeO3 multiferroic ceramics optimized through two-step doping

Sheng ZHUa, Yanhong GUb, Yao XIONGa, Xi ZHOUa, Yong LIUa, Yu WANGc, Wanping CHENa( )
Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, Hubei 430072, China
School of Physics and Electronic Information, Luoyang Normal College, Luoyang, Henan 471022, China
School of Materials Science and Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
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Abstract

Ceramics of Bi0.9Ba0.1Fe0.925TixO3 (x = 0.0625, 0.08125, 0.0875, and 0.11) were prepared according to two doping strategies: one is called single-step doping in which Ba and Ti were doped together in calcination, while the other one is called two-step doping in which Ba and Ti were doped in calcination and sintering, respectively. Compared with samples prepared with single-step doping, those prepared with two-step doping have obviously different XRD patterns and small grains, and are dramatically improved in dielectric loss, resistivity, and remnant magnetization. A low dielectric loss of 0.05 at 103 Hz, a high resistivity of 4×1012 Ω·cm, and a large remnant magnetization of 1.5 emu/g, have been obtained simultaneously for Bi0.9Ba0.1Fe0.925Ti0.11O3 prepared with two-step doping. The contrast between these two doping strategies clearly reveals the importance of establishing a proper doping strategy when two or more elements are co-doped to BiFeO3.

Keywords

BiFeO3multiferroicdopingnonstoichiometric

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Journal of Advanced Ceramics
Volume 5 Issue 3,
September 2016
Pages 204-209
DOI: 10.1007/s40145-016-0191-3
Cite this article:
ZHU S, GU Y, XIONG Y, et al. Effects of Ba and Ti co-doping on BiFeO3 multiferroic ceramics optimized through two-step doping. Journal of Advanced Ceramics, 2016, 5(3): 204-209. https://doi.org/10.1007/s40145-016-0191-3

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Received: 29 February 2016
Revised: 19 April 2016
Accepted: 06 May 2016
Published: 27 June 2016
© The author(s) 2016

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