CERAMIC POWDER MATERIAL, SINTERED BODY, AND BATTERY

A ceramic powder material containing: a first garnet-type compound containing Li, La, and Zr; and a second garnet-type compound containing Li, La, and Zr and having a composition different from a composition of the first garnet-type compound, in which the first garnet-type compound and the second garnet-type compound are represented by Formula [1] Li7-(3x + y) M1xLa3Zr2-yM2yO12, where M1 is Al or Ga, M2 is Nb or Ta, the first garnet-type compound satisfies 0 ≤ (3x + y) ≤ 0.5, and the second garnet-type compound satisfies 0.5 < (3x + y) ≤ 1.5.