Dielectric Ceramic, Manufacturing Method Thereof, And Multilayer Ceramic Capacitor

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A dielectric ceramic whose primary crystal grains 1 comprise a composite oxide composed mainly of Ti and at least one kind of alkaline earth metal element selected from Ca, Sr and Ba. The primary crystal grains 1 contain the metal compositions of Mg, Mn and a rare earth element. At least one kind of metal composition of the Mg, the Mn and the rare earth element is present at a higher concentration on the surface side 5 of the primary crystal grains 1 than the inside 3 thereof. A 0.04 to 0.2 parts by mass of Zr in terms of oxide to 100 parts by mass of the composite oxide is contained. It is therefore able to impart a high dielectric constant even to finely granulated barium titanate based crystal grains, and also stabilize the temperature characteristics of dielectric constant.