For semiconductor manufacturing equipment

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A semiconductor production device component includes a first ceramic member including an AlN-based material, a second ceramic member including an AlN-based material, and a joint layer disposed between the first ceramic member and the second ceramic member so as to join the first ceramic member and the second ceramic member to each other, wherein the joint layer includes a perovskite oxide represented by ABO3 (wherein A is a rare earth element, and B is Al) and includes no rare earth single oxide containing exclusively a rare earth element and oxygen.