Sintered material, method for producing same, and electron source and device provided with same

Abstract

A method for producing a sintered material, the sintered material being constituted by iridium and cerium, and the method including: a step of preparing a sintered body constituted by iridium and cerium; and a step of heating the sintered body at a temperature of 1400 to 1800° C. for 0.5 hours or more in an atmosphere having an oxygen partial pressure of 10−1 Pa or less to obtain the sintered material. A sintered material constituted by iridium and cerium, having a work function of 3.8 eV or less.

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