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Effects of (LiCe) co-substitution on the structural and electrical properties of CaBi2Nb2O9 ceramics |
Tian Xiao-Xia(田晓霞)a)†, Qu Shao-Bo(屈绍波)a)b), Du Hong-Liang(杜红亮)a), Li Ye(李晔)a), and Xu Zhuo(徐卓)b) |
a. College of Science, Air Force Engineering University, Xi醤 710051, China;
b. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi醤 Jiaotong University, Xi醤 710049, China |
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Abstract The piezoelectric, dielectric, and ferroelectric properties of the (LiCe) co-substituted calcium bismuth niobate (CaBi2Nb2O9, CBNO) are investigated. The piezoelectric properties of CBNO ceramics are significantly enhanced and the dielectric loss tanδ decreased. This makes poling using (LiCe) co-substitution easier. The ceramics (where $\Box$ represents A-site Ca2+ vacancies, possess a pure layered structure phase and no other phases can be found. The Ca0.88(LiCe)0.04$\Box$0.04Bi2Nb2O9 ceramics possess optimal piezoelectric properties, with piezoelectric coefficient (d33) and Curie temperature (TC) found to be 13.3 pC/N and 960 ℃, respectively. The dielectric and piezoelectric properties of the (LiCe) co-substituted CBNO ceramics exhibit very stable temperature behaviours. This demonstrates that the CBNO ceramics are a promising candidate for ultrahigh temperature applications.
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Received: 24 June 2011
Revised: 19 September 2011
Accepted manuscript online:
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PACS:
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77.65.Bn
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(Piezoelectric and electrostrictive constants)
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77.80.B-
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(Phase transitions and Curie point)
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77.84.-s
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(Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50632030 and 10804130) and the Shaanxi Provincial Natural Science Foundation, China (Grant No. 2011JM6012). |
Corresponding Authors:
Tian Xiao-Xia,xiaoxiatian@126.com
E-mail: xiaoxiatian@126.com
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Cite this article:
Tian Xiao-Xia(田晓霞), Qu Shao-Bo(屈绍波), Du Hong-Liang(杜红亮), Li Ye(李晔), and Xu Zhuo(徐卓) Effects of (LiCe) co-substitution on the structural and electrical properties of CaBi2Nb2O9 ceramics 2012 Chin. Phys. B 21 037701
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