Ceramic and method for preparing the same

1. A ceramic comprising an alumina and an oxygen-containing compound of strontium having a perovskite structure,

wherein the oxygen-containing compound of strontium comprises at least one of Sr a A b O c and Sr x E y O z , where A represents at least one of tantalum and niobium; E represents at least one selected from a group consisting of cobalt, iron and manganese.

2. The ceramic of claim 1 , wherein a ranges from 1.5 to 2.5, b ranges from 1.5 to 2.5, c ranges from 6.5 to 7.5, y ranges from 0.9 to 1.1, and z ranges from 2.7 to 3.3.

3. The ceramic of claim 1 , wherein a red-green value of the ceramic ranges from 0.06 to 0.07, and a blue-yellow value ranges from 0.032 to −0.02.

4. The ceramic of claim 1 , wherein a luminosity value L of the ceramic ranges from 43 to 44.

5. The ceramic of claim 1 , wherein a toughness of the ceramic is in a range of 6 MPa m½ to 8 MPa m½.

6. A ceramic comprising an alumina and an oxygen-containing compound of strontium having a perovskite structure that is obtained by the method comprising:

providing a first uniform slurry of a basis material, an additive, a flexibilizer, a black stain and a sintering aid in an organic solvent;

providing a second uniform slurry of the organic solvent and a binder;

drying the second slurry to form a spherical powder; and

dry pressing and sintering the spherical powder to form the ceramic, wherein the basis material comprises alumina, the additive comprises strontium carbonate, and an oxygen-containing compound of strontium having a perovskite structure is obtainable by a reaction of the additive with at least one of the flexibilizer and the black stain during the sintering process,

wherein the oxygen-containing compound of strontium comprises at least one of Sr a A b O c and Sr x E y O z , where A represents at least one of tantalum and niobium; E represents at least one selected from a group consisting of cobalt, iron and manganese.