Powder for manufacturing sintered bodies and its manufacturing method, and ceramic sintered bodies

Abstract

The present invention aims to provide a powder for manufacturing sintered ceramic sintered bodies that exhibits excellent magnetic properties, small grain size, and high spinel synthesis, as well as a method for manufacturing the powder and the resulting ceramic sintered body. The powder for manufacturing sintered bodies of the present invention has a spinel structure represented by the formula MeO·Fe2O3. In the powder, the metallic element Me is at least one selected from the group consisting of Zn, Ni, Cu, Mn, Mg, Co, and rare earth elements. The crystallite size of the powder, determined by X-ray diffraction, is 30 nm to 100 nm, and the coefficient of variation of the crystallite size, obtained from observation images obtained using a scanning electron microscope, is less than 30%.