Provided is a laminated ceramic capacitor, which has a smoothed surface, and furthermore, an internal electrode which can surely eliminate electrode interruption. A conductive paste, a nickel powder or an alloy powder having nickel as a main component to be used for the laminated ceramic capacitor, and a method for manufacturing such powder are also provided. The nickel powder or the alloy powder having nickel as a main component has a spherical shape, an average grain diameter (D50) of 10-300nm, and a ratio (Dmax/D50) of the average grain diameter D50 to the maximum value Dmax of the grain diameter is 3 or less.