Calcium copper titanate
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| Properties | |
|---|---|
| CaCu3Ti4O12 | |
| Molar mass | 614.1789 g/mol |
| Appearance | brown solid |
| Density | 4.7 g/cm3, solid |
| Melting point | >1000 °C |
| Structure | |
| Crystal structure | Cubic |
| Space group | Im3, No. 204 |
| Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
| Infobox references | |
Calcium copper titanate (also abbreviated CCTO, for calcium copper titanium oxide) is an inorganic compound with the formula CaCu3Ti4O12. It is noteworthy for its extremely large effective dielectric constant of approximately 12,000 at room temperature,[1] although this value varies widely as a function of particle size.[2][3] While its intrinsic relative permittivity is about 100, how its large effective permittivity is generated is a matter of debate.[4]
References
- ↑ Guillemet-Fritsch, S.; Lebey, T.; Boulos, M.; Durand, B. (2006). "Dielectric properties of CaCu3Ti4O12 based multiphased ceramics". Journal of the European Ceramic Society 26: 1245. doi:10.1016/j.jeurceramsoc.2005.01.055.
- ↑ Subramanian, M.A.; Li, D.; Duan, N.; Reisner, B. A.; Sleight, A. W. (2000). "High Dielectric Constant in ACu3Ti4O12 and ACu3Ti3FeO12 Phases". Journal of Solid State Chemistry 151 (2): 323. Bibcode:2000JSSCh.151..323S. doi:10.1006/jssc.2000.8703.
- ↑ Barber, P.; Balasubramanian, S.; Anguchamy, Y.; Gong, S.; Wibowo, A.; Gao, H.; Ploehn, H. J.; zur Loye, H.-C. (2009). "Polymer Composite and Nanocomposite Dielectric Materials for Pulse Power Energy Storage". Materials 2 (4): 1697–1733. Bibcode:2009Mate....2.1697B. doi:10.3390/ma2041697.
- ↑ Research in Progress 2010, the University of Sheffield.