Giant Dielectric Constant and Good Temperature Stability in Y2/3Cu3Ti4O12 Ceramics
β Scribed by Pengfei Liang; Zupei Yang; Xiaolian Chao; Zonghuai Liu
- Book ID
- 119857191
- Publisher
- John Wiley and Sons
- Year
- 2012
- Tongue
- English
- Weight
- 658 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0002-7820
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## Abstract CaCu~3~Ti~4β__x__~ Nb__~x~__ O~12~ (__x__ = 0, 0.01, 0.08, 0.2) ceramics were fabricated by a conventional solidβstate reaction method. The ceramics showed the bodyβcentered cubic structure without any foreign phases and the grain size decreases with Nb doping. Two Debyeβtype relaxation
High dielectric constants have been found in oxides of the type ACu 3 Ti 4 O 12 . The most exceptional behavior is exhibited by CaCu 3 Ti 4 O 12 , which shows a dielectric constant at 1 kHz of about 12,000 that is nearly constant from room temperature to 3003C. The cubic structure of these materials