Method for producing rare earth iron garnet sintered body

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Problem : Obtaining a rare earth iron garnet sintered body in which the generation of different crystal phases is suppressed even when the sintered raw material is sintered by the discharge plasma sintering method. [Solution means] It is a method for producing a rare earth iron garnet sintered body in which the sintering raw material M is charged to the molding type 10 and discharged plasma sintered while pressurizing the sintered raw material M by the molding type 10, and the molding type 10 is composed of silicon carbide containing dopant, and the dopant amount is 2.5% 0× 10-19 atoms / cm 3 or more, discharge plasma sintering is performed in an atmosphere under atmospheric pressure and is a method for producing a rare earth iron garnet sintered body in which the sintering raw material M is sintered while pressurizing at a pressure of 200 MPa or more with respect to the sintered raw material M. [Selection Figure]Figure 1