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Effects of Bi-Substitution on Dielectric and Ferroelectric Properties of Yttrium Iron Garnet Ceramics
被引:4
|作者:
Wu, Y. J.
[1
,2
]
Zhang, T.
[1
,2
]
Li, J.
[3
]
Chen, X. M.
[1
]
机构:
[1] Zhejiang Univ, Dept Mat Sci & Engn, Lab Dielect Mat, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Cyrus Tang Ctr Sensor Mat & Applicat, Hangzhou 310027, Zhejiang, Peoples R China
[3] Zhejiang Univ Technol, Coll Chem Engn & Mat Sci, Hangzhou 310006, Zhejiang, Peoples R China
基金:
美国国家科学基金会;
关键词:
Dielectric properties;
ferroelectric properties;
yttrium iron garnet;
ELECTRICAL-PROPERTIES;
D O I:
10.1080/00150193.2013.849963
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Dielectric and ferroelectric properties of Y3-xBixFe5O12 ceramics were extensively investigated. All the samples show a low temperature dielectric relaxation which originates from the charge carrier hopping between Fe2+ and Fe3+ and a high temperature dielectric relaxation which is associated with conduction. The dielectric constant, dielectric loss and the activation energy of the hopping process between Fe2+ and Fe3+ of Y3-xBixFe5O12 ceramics decrease with increasing Bi substitution. The conductivity decreases and the remanent polarization increases as the amount of Bi increases.
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页码:25 / 30
页数:6
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