Crystal Structure and Microstructure Variation of Nonstoichiometric Bi1±xFeO3±δ and Ti-doped BiFeO3 Ceramics under Various Sintering Conditions

Jihee Bae; Jun Chan Kim; Myong-Ho Kim; Soonil Lee

doi:10.3740/MRSK.2020.30.2.61

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2020 Vol.30, Issue 2 Preview Page Next Page

Crystal Structure and Microstructure Variation of Nonstoichiometric Bi_1±xFeO_3±δ and Ti-doped BiFeO₃ Ceramics under Various Sintering Conditions 비화학양론적 Bi_1±xFeO_3±δ와 Ti가 첨가된 BiFeO₃의 소결조건에 따른 결정구조와 미세구조 변화

February 2020. pp. 61-67

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Abstract

BiFeO₃ with perovskite structure is a well-known material that has both ferroelectric and antiferromagnetic properties called multiferroics. However, leaky electrical properties and difficulty of controlling stoichiometry due to Bi volatility and difficulty of obtaining high relative density due to high dependency on the ceramic process are issues for BiFeO₃ applications. In this work we investigated the sintering behavior of samples with different stoichiometries and sintering conditions. To understand the optimum sintering conditions, nonstoichiometric Bi_1±xFeO_3±δ ceramics and Ti-doped Bi_1.03Fe1-4x/3Ti_xO₃ ceramics were synthesized by a conventional solid-state route. Dense single phase BiFeO₃ ceramics were successfully fabricated using a two-step sintering and quenching process. The effects of Bi volatility on microstructure were determined by Bi-excess and Ti doping. Bi-excess increased grain size, and Ti doping increased sintering temperature and decreased grain size. It should be noted that Ti-doping suppressed Bi volatility and stabilized the BiFeO₃ phase.

Keywords

bismuth ferrite

multiferroic

ferroelectric

defect

sintering

References

J. B. Neaton, C. Ederer, U. V. Waghmare, N. A. Spaldin and K. M. Rabe, Phys. Rev. B, 71, 014113 (2005). 10.1103/PhysRevB.71.014113

G. Catalan and J. F. Scott, Adv. Mater., 21, 2463 (2009). 10.1002/adma.200802849

L. W. Martin, S. P. Crane, Y. H. Chu, M. B. Holcomb, M. Gajek, M. Huijben, C. H. Yang, N. Balke and R. Ramesh, J. Phys.: Condens. Matter., 20, 434220 (2008). 10.1088/0953-8984/20/43/434220

Y. Lee, Z. Q. Liu, J. T. Heron, J. D. Clarkson, J. Hong, C. Ko, M. D. Biegalski, U. Aschauer, S. L. Hsu, M. E. Nowakowski and J. Wu, Nat. Commun., 6, 5959 (2015). 10.1038/ncomms695925564764

J. T. Heron, J. L. Bosse, Q. He, Y. Gao, M. Yrassin, L. Ye, J. D. Clarkson, C. Wang, J. Liu, S. Salahuddin and D. C. Ralph, Nature, 516, 370 (2014). 10.1038/nature1400425519134

C. W. Nan, M. I. Bichurin, S. Dong, D. Viehland and G. Srinivasan, J. Appl. Phys., 103, 1 (2008). 10.1063/1.2836410

M. Fiebig, T. Lottermoser, D. Fröhlich, A. V. Goltsev and R. V. Pisarev, Nature, 419, 818 (2002). 10.1038/nature0107712397352

S. M. Selbach, T. Tybell, M. A. Einarsrud and T. Grande, Adv. Mater., 20, 3692 (2008). 10.1002/adma.200800218

S. M. Selbach, T. Tybell, M. A. Einarsrud and T. Grande, J. Solid State Chem., 183, 1205 (2010). 10.1016/j.jssc.2010.03.014

10.

G. Catalan, and J. F. Scott, Adv. Mater., 21, 2463 (2009). 10.1002/adma.200802849

11.

T. Zheng and J. Wu, J. Mater. Chem. C, 3, 11326 (2015). 10.1039/C5TC02203G

12.

Y. Sun, W. Cai, R. Gao, X. Cao, F. Wang, T. Lei, X. Deng, G. Chen, H. He and C. Fu, J. Mater. Sci.: Mater. Electron., 28, 12039 (2017). 10.1007/s10854-017-7015-2

13.

J. W. Woo, S. B. Baek, T. K. Song, M. H. Lee, J. U. Rahman, W. J. Kim, Y. S. Sung and S. Lee, J. Korean Ceram. Soc., 54, 323 (2017). 10.4191/kcers.2017.54.4.04

14.

S. M. Selbach, M. A. Einarsrud and T. Grande, Chem. Mater., 21, 169 (2008). 10.1021/cm802607p

15.

D. Wang, G. Wang, S. Murakami, Z. Fan, A. Feteira, D. Zhou, S. Sun, Q. Zhao and I. M. Reaney, J. Adv. Dielectr., 8, 1830004 (2018). 10.1142/S2010135X18300049

16.

R. D. Shannon, Acta Cryst., A32, 751 (1976). 10.1107/S0567739476001551

17.

R. Das and K. Mandal, J. Magn. Magn. Mater., 324, 1913 (2012). 10.1016/j.jmmm.2012.01.022

18.

Y.-I. Jung, S.-Y. Choi, S.-J. L. Kang, Acta Mater., 54, 2849 (2006). 10.1016/j.actamat.2006.02.025

Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 30
No :2
Pages :61-67
Received Date : 2020-01-01
Revised Date : 2020-01-13
Accepted Date : 2020-01-14
DOI :https://doi.org/10.3740/MRSK.2020.30.2.61

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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