Calcium copper titanate

Calcium copper titanate
Identifiers
CAS Number	12336-91-3;
Properties
Chemical formula	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
Lattice constant	a = 7.391 Å
Hazards
NFPA 704 (fire diamond)	1 0 0
Safety data sheet (SDS)	External MSDS
	Except where otherwise noted, data are 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 dielectric constant (effective relative permittivity) of over 10,000 at room temperature.

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